Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae7be334b158ab6…

MALICIOUS

PDF

92.2 KB Created: 2021-03-05 18:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fe5b2ec6f12bab1ce271a12c2ea57b7e SHA-1: 8a365ecaf69f63b953808b0bba66bf7445f11427 SHA-256: fae7be334b158ab60c67ac6890671eb92c0f513c985ce30f5ed5784ac43b7428
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are associated with link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=what+is+solution+focused+counselling PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482023/normal_603e522eaffea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401973/normal_6008f38cb9401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_5fe83d3ce10ba.pdfIn PDF document text
    • https://cdn.sqhk.co/xezakomujar/ieAjjMr/stickman_fight_magic_brawl_legends_code.pdfIn PDF document text
    • http://itawegan.fun/puxokivuxunilirutelemojomiy1wx.pdfIn PDF document text
    • http://avit0.pro/flip_or_flopbun2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484169/normal_601bddf2e43d0.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/Njcifhb/space_war_game_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_6034fe7a3a2a5.pdfIn PDF document text
    • http://prequester.online/scentsicles_pine_ukg1e24.pdfIn PDF document text
    • https://cdn.sqhk.co/zaliroded/icjhjgg/wumatifodututewesinas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481540/normal_5feb5bb777b2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jerokiguwipifo.rf.gd/votoxixibadibaxoxemuw.pdfIn PDF document text
    • http://falivodekolulo.epizy.com/toleze.pdfIn PDF document text
    • http://norilonabu.epizy.com/rewoner.pdfIn PDF document text
    • http://popupigewomuri.rf.gd/24530588181.pdfIn PDF document text
    • http://lujatasatepixop.rf.gd/dirk_gentlys_holistic_detective_agency_ep_3_-_the_assassin_in_action.pdfIn PDF document text
    • http://bupiver.rf.gd/9352323443.pdfIn PDF document text
    • http://kerojuluped.epizy.com/vekedamudubibolimetejeza.pdfIn PDF document text
    • http://wikugojumoxo.epizy.com/16092888249.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C4B 5200 bytes
SHA-256: 36f0bfd6b84530ac82ea86992849b87b72e5f35f172d59a54f3e44807958feb0
font_01_sfnt_off00013e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E0D 11060 bytes
SHA-256: e68e16f5fe6e3142dd0d03dab6b631e87bd2dd46108fa8f9fe6a43aaf34b1a47

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