Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a32e7d29ff1c938…

MALICIOUS

PDF

59.5 KB Created: 2021-09-09 09:32:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a0d2d063ecd876af5e6c1a69a64e0fde SHA-1: 135b04b7e2065246b6040a90b4314f23f43124d6 SHA-256: 5a32e7d29ff1c9384e93c9f8424f46f85f153ea971f762b6f8a6c2cee030eaac
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm with numerous external URIs, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8763

Heuristics 4

  • 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
  • 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 http://friulanapanini.com/images/file/38508459674.pdf In PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/3653641723.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/zasum.pdfIn PDF document text
    • http://nwatchonline.com/userfiles/file/32581210382.pdfIn PDF document text
    • https://inprovitchile.com/ckfinder/userfiles/files/46793721972.pdfIn PDF document text
    • http://ngnjl.com/userfiles/files/sugagiguli.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/49537215009.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/98898462368.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133228110a3d---loxasig.pdfIn PDF document text
    • https://stiff.pl/ckfinder/userfiles/files/numavudukuluzasikebudi.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/fefabukuwinodulidiwiti.pdfIn PDF document text
    • http://bukharaalpharetta.com/sites/default/files/file/dojaxoxaga.pdfIn PDF document text
    • http://bagodilovaspark.hu/userfiles/file/fuxomujeneworowotalewew.pdfIn PDF document text
    • http://autovoda.ru/upload/files/mizuneduzevidateramaru.pdfIn PDF document text
    • http://kaus21.com/userData/board/file/90744005552.pdfIn PDF document text
    • http://termocity.by/pics/files/vedopokosofotiv.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134d35b58fc5---40385828374.pdfIn PDF document text
    • http://archbot.pl/files/file/semitusebiwuwikop.pdfIn PDF document text
    • http://toyotaquangninh.org/data/dulieu/files/ripagufinepuxafepuzuzatit.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/17474431802.pdfIn PDF document text
    • http://gyndoktors.de/ckfinder/userfiles/files/degogufezetapepov.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/nowatiwo.pdfIn PDF document text
    • http://vocal.bpv.su/content/files/files/11337874563.pdfIn PDF document text
    • http://hacsbathtarntaran.org/~/userfiles/file/gonuwifosi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=the+flash+death+runPDF link annotation

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