Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a723066cbf0362…

MALICIOUS

PDF

49.0 KB Created: 2021-08-09 06:18:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: d0e51579b1855f01cecce7da822704b7 SHA-1: d195300dec7424210cb7c7956d9e7b753f65bd40 SHA-256: 50a723066cbf0362c08993214bce418a4f34e660d0825f899cfa642337a7b165
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8583

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://rowanmkt.com/Uploads/ckfinder/userfiles/files/zotanabizawolubiwajeme.pdf In PDF document text
    • http://cymrozgreatdanes.com/clients/1/1a/1a407d8ccac5525c71aaafb6b4664123/File/daruvov.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/kunabisuxuzaluwepunedila.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f656699fd84---27846552256.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/17809754483.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a6af8a349---tolomawepijipawufamegope.pdfIn PDF document text
    • http://www.multigacos.com/admin/uploaded/fck/file/29614210863.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/moxejomegefarobenita.pdfIn PDF document text
    • http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/18866101462.pdfIn PDF document text
    • http://tindangnhadat.vn/upload/files/49336580058.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=key+expanding+tactics+for+listening+third+editionPDF link annotation

Related samples 8

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

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