Malicious PDF — malware analysis report

Static analysis result for SHA-256 f776608ff9ccb243…

MALICIOUS

PDF

49.6 KB Created: 2021-03-18 13:31:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7684d2e25d811dd4d77081b6692e62df SHA-1: b74e3f8b4d456bd22018c63f448be790f7d4dc20 SHA-256: f776608ff9ccb243ab231730e64f632048f5206c02e837b63f6e38ecdacd2dbd
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 0.7155

Heuristics 5

  • 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.
  • 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://ponafet.ru/aws?utm_term=how+to+make+t1-11+siding+look+better PDF link annotation
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/zegelejaxejatude.pdfIn PDF document text
    • https://cdn.sqhk.co/duzixulok/fgcJpPO/7816553336.pdfIn PDF document text
    • https://cdn.sqhk.co/bibunifez/iQicpji/nisidipiripubo.pdfIn PDF document text
    • https://rojirewika.weebly.com/uploads/1/3/2/7/132710632/nomeribawesi_tolof_gupitimigodax.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/4403503.pdfIn PDF document text
    • http://sitajejo.22web.org/canine_anatomy_worksheet.pdfIn PDF document text
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/gusevepikid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484623/normal_5fde7567b4c95.pdfIn PDF document text
    • https://bejixetixozivi.weebly.com/uploads/1/3/4/4/134499198/bexurimabutix.pdfIn PDF document text
    • https://dilomosef.weebly.com/uploads/1/3/4/3/134316650/puvesodajed_jozefelevo_gojemaxexeki_liwugozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_6018c6ae3484b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481408/normal_5fe620e19f75d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_604655d897a04.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/Yjeghjb/copper_prices_today_per_pound.pdfIn PDF document text
    • https://dirututusobed.weebly.com/uploads/1/3/5/3/135347210/xajofo.pdfIn PDF document text
    • http://bubuwem.iblogger.org/fupafibuvixama.pdfIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_bfad2a2ba81348729c71b6efd91c1a27.pdf?index=trueIn PDF document text
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_aec8a7b893784fff8c3695c8bc332188.pdf?index=trueIn PDF document text
    • https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_ef328c43e1934e5a9dfe6b65ee4cf1e1.pdf?index=trueIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_64bd4e99c81b4ee78f052c01524f29cc.pdf?index=trueIn PDF document text
    • http://maguzudag.epizy.com/90501565602.pdfIn PDF document text
    • https://ebd157e6-94c3-4ff5-b3ab-516f87acbde6.filesusr.com/ugd/e87473_a05c9e3d3c8b4200a13dcc84484a325a.pdf?index=trueIn PDF document text

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