Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eebe32c4f27fee0…

MALICIOUS

PDF

112.1 KB Created: 2021-04-07 21:23:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 369b3f6944f7a43ac86c581e7ca3c513 SHA-1: 2950412beb6996055051261c0f8bdeb0e83c1f70 SHA-256: 0eebe32c4f27fee048e9823bc5a4cefe03069a322e11931fe95bd1f333819acb
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on disposable domains and utilize UTM parameters, indicating a link farm designed for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to malicious sites. No scripts were extracted, but the presence of numerous external links points to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jottigo.ru/strik?utm_term=primos+truth+cam+35+model+63010+manual PDF link annotation
    • https://cdn.sqhk.co/pagozixupezi/ijfizJI/bcit_westampton_bell_schedule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452607/normal_605a8c17ce3a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5febfc12ae5d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426686/normal_603ffa72e2a0e.pdfIn PDF document text
    • https://cdn.sqhk.co/lutotilivik/ekigWDH/class_list_template_editable_free.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodimina/jaZ69dl/free_ff_stickers_for_whatsapp_2021_wastickerapps._com.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff665359f9e0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5bcf324-1f98-4eb8-9a56-6766655291e9/best_way_to_do_foreign_currency_exchange_rate.pdfIn PDF document text
    • https://8a7e94d2-1b07-4399-8a7b-cfebf1eb419e.filesusr.com/ugd/e78b77_29ea48815af74146a23e95e87ce72456.pdf?index=trueIn PDF document text
    • https://184d393c-d2ff-49e5-bbcb-48626b1dbf88.filesusr.com/ugd/49be48_e98e157f45144c16bf9adeae426587ff.pdf?index=trueIn PDF document text
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_c1d175dcffeb46d8aa60bc2f79e7f84a.pdf?index=trueIn PDF document text
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_786cf13ad2da488f81e73355f6c4141f.pdf?index=trueIn PDF document text
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_f1ae728fbf834e3d975231074b65cbec.pdf?index=trueIn PDF document text
    • https://11210a16-d5d1-4e17-93a3-27fbbb12f21b.filesusr.com/ugd/fb658e_5c6bc9d0c5e54cc8bef281be811a5ac9.pdf?index=trueIn PDF document text
    • https://2b075577-062e-477b-ba44-a680027dca12.filesusr.com/ugd/ee943f_abba1bdfaa3c4c929c52f67ad016e77c.pdf?index=trueIn PDF document text
    • https://313cea95-bd78-4864-9d9d-3b26c3bbe0bd.filesusr.com/ugd/2142af_6bd67322522e48f790d50199a837fb6f.pdf?index=trueIn PDF document text
    • https://50bf384a-eeac-4f26-a262-e2ba1a5e00ba.filesusr.com/ugd/17159d_4096a47604754c4db4fac87c7f3868c6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddbd9986-04c4-488d-ab67-88b4a6513276/hp_envy_4500_printer_cartridge_price_in_india.pdfIn PDF document text
    • https://def05634-b969-4265-beeb-1e7d695e9a44.filesusr.com/ugd/6865ce_db0ae632adc74fda8f7a79f4d595dba6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3342ec50-99b0-4edf-9c93-f7f5e999ae24/delemutiwutewasosenafu.pdfIn PDF document text
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_99d2083fe9e843d39329d84f5dbba329.pdf?index=trueIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_54d4acdf603448c396aa4db5734563d1.pdf?index=trueIn PDF document text
    • https://7be8961d-effb-4c78-a255-78c3c9f0be09.filesusr.com/ugd/3dd68e_a88d347b9be04d4c86aea9a083dbd716.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AFC 3312 bytes
SHA-256: 5e42e6eb47e9ede46d3c3db3beed48fedb7aed60f7e10cf5c6b07aaa6781e319
font_01_sfnt_off000156b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156B9 5816 bytes
SHA-256: bb84a4aae3f07c1e3b9bbde632d3ea88a98dce658431be2484c79ecce1c60ee6
font_02_sfnt_off00016a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A5B 14596 bytes
SHA-256: aaa178cdf5c65e250891c8b2c805cecf70937c4743a1457ab79bba9bb1b843ca
font_03_sfnt_off00019b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B41 16516 bytes
SHA-256: cdeaf70c53359e32d152cd9ce619c2ca171a291bab3ad2aeeeafe0627f9ff558