Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67775608e2824ac…

MALICIOUS

PDF

76.4 KB Created: 2021-02-25 21:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 16aec201b3277cb7b860a7082421a7d6 SHA-1: 7194f17531e432e1ac893b59f0c8ca1e52b3e3be SHA-256: e67775608e2824ac47b5a6aba2438dca659688147e2c93c7e39b2997a33b3804
184 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier. It contains numerous embedded links, many of which point to disposable domains and known malicious redirectors, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains metadata related to 'World War Z 2 movie cast' and the authoring application, likely serving as a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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 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://yafferge.ru/award?keyword=world+war+z+2+movie+cast In PDF document text
    • https://zaxusivu.weebly.com/uploads/1/3/5/3/135393217/weseninoru.pdfIn PDF document text
    • http://onsideball.info/smtp_mail_tester6p9aq.pdfIn PDF document text
    • http://faporivifavavep.22web.org/gym_workout_spreadsheet_template.pdfIn PDF document text
    • https://rejileju.weebly.com/uploads/1/3/4/3/134335231/febumajeperim_lizegisebuzaw.pdfIn PDF document text
    • https://vawenajibafadak.weebly.com/uploads/1/3/1/3/131384306/kifudox_neporewefi_lakujofufa.pdfIn PDF document text
    • http://wgathering.org/kayla_itsines_28_day_healthy_eatingvatvs.pdfIn PDF document text
    • https://kazuvamelu.weebly.com/uploads/1/3/0/7/130738637/ed56b95.pdfIn PDF document text
    • https://xefinaloze.weebly.com/uploads/1/3/2/8/132814425/tanekikanaxu-fokijagele-sivepatu-fujuzuboweja.pdfIn PDF document text
    • http://rapugazif.22web.org/33774443808.pdfIn PDF document text
    • https://mitiguranam.weebly.com/uploads/1/3/4/4/134456526/regomadonobiduzotab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wafugid.epizy.com/beats_solo_3_wireless_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/accessory_to_war.pdfIn PDF document text
    • http://vodoxaxadax.rf.gd/guwakoxasewe.pdfIn PDF document text
    • http://ribikusilotagod.rf.gd/modul_belajar_gitar.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/pixinevo.pdfIn PDF document text
    • http://pojoxonofed.rf.gd/lamoxorisuzu.pdfIn PDF document text
    • http://gesuposobevexo.rf.gd/netexefasakugadomobofus.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_off0000ee6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6C 5432 bytes
SHA-256: 1e99432faf94d24a8f477f1c0ef7a2d7b6580a91f741f9412c71fa0d3e2021bc
font_01_sfnt_off000100f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F0 10504 bytes
SHA-256: 48a13a41a3050131a529e33d2c5d4c4ebabc58e9e434a3b0f075e809c74bc868

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