Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78ea258c9192f5e…

MALICIOUS

PDF

49.0 KB Created: 2021-03-15 03:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 793410ac365ef620094be43f30b70f78 SHA-1: 98594216e77d2042298e1fe175503e6dc81cbf18 SHA-256: c78ea258c9192f5e5c1d9f843be7c2345359dd5d5e29f1d9354fec9309ec2343
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9328

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 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.
  • 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=arthritis+hip+exercises+pdf PDF link annotation
    • https://fegowudabe.weebly.com/uploads/1/3/1/4/131438077/mokawimakej.pdfIn PDF document text
    • http://xsafak.com/top_nearby_chat_appsv9kxa.pdfIn PDF document text
    • https://piximemob.weebly.com/uploads/1/3/4/3/134371032/bikuw.pdfIn PDF document text
    • http://kernig.store/89602786004ncuc5.pdfIn PDF document text
    • https://wabatopopelak.weebly.com/uploads/1/3/0/7/130775953/b2d332350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529024/normal_60469a55d31b4.pdfIn PDF document text
    • http://www19216801.site/zombie_sniper_shooter7d8zw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387932/normal_5ff152a796b1e.pdfIn PDF document text
    • http://unreguezff.rest/financial_analyst_journal81miv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417528/normal_6020270f7b96b.pdfIn PDF document text
    • https://juladuwupib.weebly.com/uploads/1/3/4/7/134763366/kosekopuvogel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445125/normal_5fd67ff5bbf4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fd37a594850f.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/corrugated_galvanized_steel_sheets_for_roof.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/camp_chef_woodwind_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/30812018157.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/annihilation_jeff_vandermeer_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/75691525558.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/25570985208.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/circumference_of_a_circle_worksheet_gcse.pdfIn PDF document text

Related samples 8

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

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