Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b444318e6ff4fb…

MALICIOUS

PDF

48.4 KB Created: 2021-06-07 01:26:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 57d076667e250044e06d700bb04ac2c7 SHA-1: 9b2168107e6075cc637c8bbc4cda876b14ebb992 SHA-256: 47b444318e6ff4fb13045004242bf2d9ebd64e20f1adf2346ea5058308ad7606
184 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.7606

Heuristics 5

  • 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 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.
  • 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://philabc.ru/pbw?utm_term=music+ringtones+for+android+free+download PDF link annotation
    • https://lukejofavum.weebly.com/uploads/1/3/4/4/134455809/8345702.pdfIn PDF document text
    • https://mosezusimoz.weebly.com/uploads/1/3/1/6/131637881/94091.pdfIn PDF document text
    • https://xemaxokiba.weebly.com/uploads/1/3/4/3/134350412/7d998af50701.pdfIn PDF document text
    • http://guzopisuw.pbworks.com/f/gunazekep.pdfIn PDF document text
    • http://tukufidanega.pbworks.com/f/4547778416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbf990c1-938f-4ea5-b60c-16e25e3fafef/65332914107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42dd049f-16ae-4d16-819d-a719062271c7/mamozigurule.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/w/file/fetch/144566868/wiwovufotojamosinar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b7408ff-eb8d-4ed0-9387-1e08ef658253/podobulelit.pdfIn PDF document text
    • http://mikabipi.pbworks.com/w/file/fetch/144725730/70438596082.pdfIn PDF document text
    • http://garigor.pbworks.com/w/file/fetch/144424734/gakudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaacbd61-f720-4da3-9651-96edf3e05284/45297057110.pdfIn PDF document text
    • http://lebunurivugu.pbworks.com/f/okyanus_yaynlar_8.snf_fen_soru_bankas_indir.pdfIn PDF document text
    • http://tasonupopam.pbworks.com/w/file/fetch/144505974/bikavixigadijaxonetesax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/032da94a-6329-4e29-9a48-f633fc3fd8a8/garebapesipitikobuwezokus.pdfIn PDF document text
    • http://detomipipu.pbworks.com/w/file/fetch/144517281/50673092473.pdfIn PDF document text
    • http://nafidob.pbworks.com/w/file/fetch/144602757/zabojunifesiduvox.pdfIn PDF document text
    • http://sekodegaxex.pbworks.com/w/file/fetch/144679659/27946235681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4398200e-4022-418d-b306-2c0f5d500b66/common_noun_and_proper_noun_examples_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48c51cfc-bfd6-4e11-ada5-e7c8b5d2c5f5/13218441970.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d090c44b-d883-4e87-a597-fab6b2a72487/gekazisemogis.pdfIn PDF document text

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