Malicious PDF — malware analysis report

Static analysis result for SHA-256 69879ff7f20b6762…

MALICIOUS

PDF

111.0 KB Created: 2021-03-28 08:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a3476810361e539edf890700c1378c6b SHA-1: da15a97576afa0fded50a49f9040d21b21188ead SHA-256: 69879ff7f20b67622f4003f98c602832122897a2d2876150b8dca955fb14da19
126 Risk Score

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 0.9994

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://bologen.ru/123?utm_term=nhtsa+manual+2016 PDF link annotation
    • https://cdn.sqhk.co/jawutuwek/Tjdgh9f/74272895339.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/aai3jgW/98727791662.pdfIn PDF document text
    • http://togibebabe.22web.org/cyclops_spotlight_1400_lumens.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/6356640.pdfIn PDF document text
    • https://pedamajemekiju.weebly.com/uploads/1/3/1/3/131380885/muvogowo_gesozitafuti_kapezowuzefava.pdfIn PDF document text
    • http://wide-take.top/lord_of_the_flies_chapter_10_discussion_questions6b7vi.pdfIn PDF document text
    • http://beremoter.online/gedepuvirug0ttjr.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/talufo.pdfIn PDF document text
    • http://vostokzapad.su/types_of_triangles_ks2_worksheetqe1yf.pdfIn PDF document text
    • https://bolukuja.weebly.com/uploads/1/3/0/7/130739437/5124157.pdfIn PDF document text
    • https://tabivivefevevu.weebly.com/uploads/1/3/4/8/134889686/xukamowuneka-gusevaz-dejadade.pdfIn PDF document text
    • https://cdn.sqhk.co/remudejifi/iregjYy/30254471413.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/Jhghgfv/63830742409.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/agfjcgd/25441988732.pdfIn PDF document text
    • http://mon-compte-cmb.best/tigivomategibiwat7c14v.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/saxiluz.pdfIn PDF document text
    • https://nakoginav.weebly.com/uploads/1/3/0/7/130776809/goweropujuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xilagerezob.epizy.com/totanekaxi.pdfIn PDF document text
    • http://watijosanowo.epizy.com/26414405796.pdfIn PDF document text
    • http://zurabogefu.rf.gd/monthly_employee_shift_schedule_template_excel.pdfIn PDF document text
    • http://luwegovufa.epizy.com/83700967432.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://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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16053 5276 bytes
SHA-256: b77789c6bc7466023caba760be7cdbded33ab8d45ff95c7c8a14d6b0b3ed19c3
font_01_sfnt_off00017228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17228 11152 bytes
SHA-256: c884e28ada7873cbf641487bd82b17aef854590d2a0d4946e1dc75d2d42092f6
font_02_sfnt_off00019893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19893 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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