Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2f3da818f93698…

MALICIOUS

PDF

112.7 KB Created: 2021-03-19 19:46:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 29cac627b7b58a6c3fd3c2fbfd96ef41 SHA-1: c15a637003dbafe58d6be8537bead872d042a085 SHA-256: be2f3da818f936988c957e6694c66517e256fb3aa33e2052e416f835ae547c31
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics as malicious, including a redirector link and a large link farm on disposable hosting. The embedded URLs, such as https://crophysi.ru/wix?keyword=fancy+keyboard+apk+old+version and http://pofaduxiruk.getenjoyment.net/dawiwaruwujebekikememi.pdf, are likely part of a campaign to drive traffic to malicious content or phishing sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9225

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/wix?keyword=fancy+keyboard+apk+old+version In PDF document text
    • http://pofaduxiruk.getenjoyment.net/dawiwaruwujebekikememi.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/pdf_file_compressor_software.pdfIn PDF document text
    • http://zekifafeter.scienceontheweb.net/wixonalumovi.pdfIn PDF document text
    • http://nefozufovi.scienceontheweb.net/83842169555.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/que_es_relevante_diccionario.pdfIn PDF document text
    • http://larokamexi.sportsontheweb.net/anode_heel_effect.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://5a060084-92f5-4e09-b02e-bbac8bb45871.filesusr.com/ugd/05c943_5f62933c7839470381b145a1fe1817d2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c457dbc7-7988-4452-ae70-ebda964f2ca9/plato_euthyphro_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b7b7e4-e600-45ce-8ab2-a524af9509e1/vapofowow.pdfIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_6d7410a5dd9948ba935dc294af1abf8d.pdf?index=trueIn PDF document text
    • http://rorazizaxaf.atwebpages.com/prepositions_of_place_exercises_pre_intermediate.pdfIn PDF document text
    • https://68a74d12-89ac-4a94-b826-09ad332a30bf.filesusr.com/ugd/1a0392_1e4ca114db4e4f07bc0cf7556646cef1.pdf?index=trueIn PDF document text
    • http://guxejusoselota.myartsonline.com/az_vehicle_bill_of_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/vidaliguzofejamoginazin.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/baredabepigefaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/654de79a-a603-4ab1-b82d-836b850a2227/kovuneverek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4af16c-7133-4279-ad64-662b5b93c851/what_is_the_trunk_of_a_palm_tree_called.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/2590611970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab3b088f-a2c9-4a7a-a511-b071ca16ab73/what_is_the_average_middle_class_income_per_year.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4eb3fa0-3f13-4794-bef9-1a8645ae88e4/huckleberry_finn_audiobook_chapter_12.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/biochemistry_multiple_choice_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8aadc1-a08b-4840-af5d-f70509776641/68326382818.pdfIn PDF document text
    • http://gifidabula.atwebpages.com/xepovarixokizavamufodug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e619a398-d0be-42e6-b694-782fa90d4c19/grammar_textbook_class_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ea356b-8d8c-4236-ab85-456eb09a6c8c/28479418549.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 12

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 3288 bytes
SHA-256: 6ab46f12474e68139f673941b37e9ef79510a81aedee0b72b2ed9b9adda6591a
font_01_sfnt_off0000f9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CE 5388 bytes
SHA-256: 6a31485a50ce51aa1388b0d470f651fe7848ffddb4832c5d85e9e571400ae9ab
font_02_sfnt_off00010c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C35 2656 bytes
SHA-256: dbaab8dcf32bfe64cb008f34eb54f5316f62236e8dffe3de49b44225404383a5
font_03_sfnt_off00011737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11737 4140 bytes
SHA-256: 7073f777ec002e82a856420936458262fa3cc3b4ee0437ed56f01fa51c4379d2
font_04_sfnt_off00012455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12455 3048 bytes
SHA-256: 2f58f42410b60611991c12283e964e03297a95500ca09b14f4d605296bc50bc4
font_05_sfnt_off00013064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13064 2328 bytes
SHA-256: 864cbe2c6973b44d2b71e19ffbffb2328dcb3759b07ceb43c11d5a372fc4956d
font_06_sfnt_off00013b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B1A 2108 bytes
SHA-256: d117309382da938f7dffedc42f90dd4217b4d540d75629b80669d975ecbc171e
font_07_sfnt_off000144f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144F3 2604 bytes
SHA-256: 0e4b190990c22158f359a0de2485c61736e93a484cfb226f63bccb9bc1da1b2f
font_08_sfnt_off00015014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15014 4336 bytes
SHA-256: 87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284
font_09_sfnt_off00015dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DBF 15332 bytes
SHA-256: c0522f9da2d3a24b48faf6ee808b15cffe4d515615e6cc456bf778ad21a9714a
font_10_sfnt_off00018b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B5C 17304 bytes
SHA-256: a156dff1b8581bfc3cf94b44d57bda15d56bee5b40f4797e9c6a97a967cb540c
font_11_sfnt_off0001a522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A522 2832 bytes
SHA-256: ee8afa51e50492bdf4d25b6b01818d2021856a0eb5271b70f188e6d094f25891

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