Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb7627ff786394e…

MALICIOUS

PDF

70.7 KB Created: 2021-02-12 20:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0b48900fab703de28c9ca38c3c9d610f SHA-1: abe1d64202070a7441ae23c45eddfe25d78fc3c0 SHA-256: 9cb7627ff786394e834f7f56b4489e38e0276501fac64d1a7b7807bb1090260e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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/wix?keyword=mpsa+april+2020 PDF link annotation
    • https://xekelubapakam.weebly.com/uploads/1/3/4/4/134499273/1366672.pdfIn PDF document text
    • https://sexeduju.weebly.com/uploads/1/3/5/3/135327292/lozagijelonexo_nemosomuwume_kijujibikekako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383308/normal_600fa08283885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385636/normal_600a1231f2db7.pdfIn PDF document text
    • https://rusipamisu.weebly.com/uploads/1/3/4/0/134017355/b01e9dc03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465545/normal_5fcc82c6120df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_5fdc379674757.pdfIn PDF document text
    • https://votozugilom.weebly.com/uploads/1/3/1/0/131071295/123845.pdfIn PDF document text
    • https://kogezuzoxato.weebly.com/uploads/1/3/1/0/131070880/kesuvovifozes-zufitemitak-poguwizibanezid.pdfIn PDF document text
    • https://fonevufaj.weebly.com/uploads/1/3/4/4/134444269/zapuletapomit.pdfIn PDF document text
    • https://turudesufexo.weebly.com/uploads/1/3/4/1/134131379/8deba25.pdfIn PDF document text
    • https://wepusiviji.weebly.com/uploads/1/3/4/6/134661614/farar-risovoxid-leneg-miwowim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_601a99b2d7a9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459629/normal_600bbbb780de4.pdfIn PDF document text
    • https://digagewopaloz.weebly.com/uploads/1/3/4/6/134634746/60326e4e3a3a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413362/normal_6007cc9b4dc52.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jusuberu/agar._io_mod_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/banque_postale_tarif_formule_de_compte.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/cd4053bcn_datasheet.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 5092 bytes
SHA-256: b7532ff9bb09e8406555bf7d570bb4ea2a6f71ddcc1a7a9a0333b7853a6f9ea8
font_01_sfnt_off0000ec04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC04 9936 bytes
SHA-256: 11deb0e8c41eb9cfd05720ae29f9e4d2ca0b605a6bc41774ba251bef878a9f9d

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