Malicious PDF — malware analysis report

Static analysis result for SHA-256 e886dec6b9d53a12…

MALICIOUS

PDF

94.3 KB Created: 2021-05-02 21:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b4723b31becebffc908ceaff513c91c1 SHA-1: e6b2c3af3bf3bbb1e3429960a6b1fe42bb94eba1 SHA-256: e886dec6b9d53a126f625915b370d4855077325740bcf86453a3490be7b87e3f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/strik?utm_term=programming+with+visual+basic.net+notes+in+hindi PDF link annotation
    • https://cdn.sqhk.co/fuvebopeweb/cgdjaYb/funny_urdu_stickers_for_wallpaper_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/iiyijgh/libejizenavarejorifapufo.pdfIn PDF document text
    • http://nubatevujonuw.mygamesonline.org/pikovezokiwasobuwifi.pdfIn PDF document text
    • http://bugiwuxad.medianewsonline.com/gutijomevipuvovatoxadijub.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/gjjdKmo/surakaxakobamirosew.pdfIn PDF document text
    • http://motubudasuvapan.medianewsonline.com/ucp_bearing_catalogue.pdfIn PDF document text
    • http://zifixoribe.scienceontheweb.net/mahadiscom_assistant_engineer_syllabus.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/hahhdgh/jikizuwozo.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/entry_level_cloud_computing_jobs_london.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/gjKggjZ/my_smart_move_application_fee.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
    • https://uploads.strikinglycdn.com/files/8c434638-3fa0-40de-928a-7fbb1f8a4ad4/virujotutow.pdfIn PDF document text
    • http://zaduzos.myartsonline.com/definition_of_business_research.pdfIn PDF document text
    • http://tagijonegularol.myartsonline.com/vepizifugonovotu.pdfIn PDF document text
    • http://goxafebo.myartsonline.com/carrabba_s_menu_prices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff35a6a-d023-46ed-bdc7-1908ab97d33b/xolonozizosozizokojik.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10091 5676 bytes
SHA-256: 1b85d7fefb723eb7f81f0461515ff1e1235bd3a9b0af3b1f3cafb029becc086b
font_01_sfnt_off000113c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C3 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00011f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F25 10492 bytes
SHA-256: 3e21124009963d8506d6e7736fc27c9224cabfc4cff0b7377535d21d24cdd05b
font_03_sfnt_off0001432d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1432D 13576 bytes
SHA-256: 872fb98dfd81386410eb374af7c27e4d6ffc6f4cdc156e45484bafdb848115b8

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