Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cdf5228ef2964c…

MALICIOUS

PDF

62.3 KB Created: 2021-03-06 06:53:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f3277edcf61feaabb8834b87815354fd SHA-1: b745b1a15cbd219aad8d07be729c19bd95bd14db SHA-256: 34cdf5228ef2964c4706705cd21d880467ab89d6c348d064d2b178d0eed3773d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic indicating it is a link farm with numerous external links, one of which is a suspicious URL hosted on 'mezovuduw.ru'. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 4

  • 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 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mezovuduw.ru/award?keyword=app+para+aprender+ingl%25C3%25A9s+con+canciones+gratis PDF link annotation
    • https://cdn.sqhk.co/paweboke/igichjd/best_free_games_on_boardgame_arena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475391/normal_60372c810fa11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5fce5d7883acc.pdfIn PDF document text
    • https://lelibajoterudu.weebly.com/uploads/1/3/4/0/134042739/zuxuwudomarot_nabujuned.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/bicziaI/9795517609.pdfIn PDF document text
    • https://zisidolig.weebly.com/uploads/1/3/1/3/131379992/forapalezamilanumubo.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/2MGhgig/2015_all_malayalam_movies_box_office_verdict_imdb.pdfIn PDF document text
    • https://bujubilefo.weebly.com/uploads/1/3/1/4/131406518/tedirunawafitiviji.pdfIn PDF document text
    • https://mirulunus.weebly.com/uploads/1/3/1/1/131164386/183835.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/gjjfjhr/wallpaper_hd_desktop_4k_anime.pdfIn PDF document text
    • https://fokutape.weebly.com/uploads/1/3/2/8/132814024/91d717f030b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373008/normal_5fc860b594bb5.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/LhiIicY/super_mario_world_multiplayer_adventure_download.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/15505399222.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/widinoregig.pdfIn PDF document text
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_8ba4160ba2874a1bb25d07016f3abc9c.pdf?index=trueIn PDF document text
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_2c0f84c1cb70481da0a7025acf5e59b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vovuzize/ap_biology_campbell_8th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/nedas.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/ooma_linx_status_lights.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/medogelilixoxofimeki.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/what_operating_system_for_gaming.pdfIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_7acefa315f6e4d4487433e426b7b2756.pdf?index=trueIn PDF document text
    • https://d2d110b1-dce0-4b0c-bed7-be24280b7a6e.filesusr.com/ugd/165585_700ace683857445bafcbd7d2c776cc41.pdf?index=trueIn PDF document text