Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df71ce9404f044c…

MALICIOUS

PDF

48.4 KB Created: 2021-03-01 11:39:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 22afcbd58faa63ac144757273d6ef815 SHA-1: ab53fb91da33b9c6eba56301f71805e4f1879764 SHA-256: 0df71ce9404f044c959a69aaa8521df30d21f2cb8fe74fb3f6da9ae6cc4fe46a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous external URIs and a heuristic identifying it as a link farm on disposable hosting suggests a phishing or malware distribution scheme. Although no scripts were extracted, the PDF structure itself likely contains embedded links or JavaScript to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8632

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 https://resalured.ru/award?keyword=the+tourist+game+steam PDF link annotation
    • http://prechambre.xyz/bluestacks_1_para_pcq5kum.pdfIn PDF document text
    • https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/20eecdafc881.pdfIn PDF document text
    • http://buwovavozu.getenjoyment.net/2622887268.pdfIn PDF document text
    • http://biolinkus.me/beechcraft_debonair_checklistqt98m.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/romeo_and_juliet_act_2_vocabulary.pdfIn PDF document text
    • https://vedagerirujo.weebly.com/uploads/1/3/6/0/136055295/nofijisewikona-vofiri-tetojediz.pdfIn PDF document text
    • https://fugomunufu.weebly.com/uploads/1/3/4/5/134586131/jobuka.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/foduwamimipajadog.pdfIn PDF document text
    • https://derigibi.weebly.com/uploads/1/3/4/4/134447264/65d5354.pdfIn PDF document text
    • http://mapugukabazewu.scienceontheweb.net/autocad_file_download_website.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/sogit.pdfIn PDF document text
    • http://tabifag.rf.gd/92538956899.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/vamalaxajisaroxana.pdfIn PDF document text
    • http://nazifaba.rf.gd/xebeson.pdfIn PDF document text
    • http://fubavinexazixo.onlinewebshop.net/30388838705.pdfIn PDF document text

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