Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f9967a04fd160a…

MALICIOUS

PDF

46.0 KB Created: 2021-06-13 03:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7824a458fc1ceaf5f9392a614baf1666 SHA-1: 16522d0bd696bd00e52cf8341d733ab13dc0830f SHA-256: 08f9967a04fd160afb92c6d980480f8a03ff0e61f8fc1b54e6fc59ee29fddffc
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 0.7951

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://smidgel.ru/pbw?utm_term=jetblue+ipo+valuation+case+study+solution PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484999/normal_6065dc72e4b24.pdfIn PDF document text
    • https://sulorajezute.weebly.com/uploads/1/3/4/8/134854577/4245851.pdfIn PDF document text
    • https://putujagojosid.weebly.com/uploads/1/3/0/7/130738675/nuwasesafinin-mamokokivamarin-duluzupovukiso-venenorobewu.pdfIn PDF document text
    • https://tavovoxiwazufaj.weebly.com/uploads/1/3/5/3/135325502/7971036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_601fc9d5d2b99.pdfIn PDF document text
    • https://xatawozenovug.weebly.com/uploads/1/3/4/8/134886035/3078008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_606cab4700c5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5fe8a79186883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_6013308b0f45a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458150/normal_605a639739d0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_5fe49c588a711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_6058b2f677fb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454550/normal_6019d8a2959d5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62da13f7-d204-401e-98eb-4d2d0e1b751b/silafajet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffae0453-2629-46aa-9fa1-55d057d8a2e1/wejusalotekidajases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7e2e73-4619-4f60-a1a5-697836492dab/how_to_make_a_sad_person_happy_over_text.pdfIn PDF document text
    • http://vogituvu.pbworks.com/w/file/fetch/145223106/working_effectively_with_legacy_code_by_michael_feathers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae5bff7-55d5-49d5-8132-568f1f0b9cc2/dark_souls_3_fun_builds_pve.pdfIn PDF document text
    • http://jetubabup.pbworks.com/w/file/fetch/144564735/xijopoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d2bb5e4-9cfb-4d9c-84e6-f2033318e9a9/behind_closed_doors_dateline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b20c6d9c-afea-456a-831f-25b1b17764d8/ruwedulimopavidana.pdfIn PDF document text

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