Malicious PDF — malware analysis report

Static analysis result for SHA-256 1160e6acccc729e9…

MALICIOUS

PDF

58.6 KB Created: 2021-02-28 15:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 835990a7b642a868667ef079baea4d2a SHA-1: f835b86e66b6e052aec13123b1200a3d8967ca55 SHA-256: 1160e6acccc729e9ab2f152d2d2f88c3b1f281635e535992069cb89a99daf114
184 Risk Score

Malware Insights

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

This PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV and ML heuristics identify it as malicious, likely a phishing or trojan distribution attempt. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, not a typical user document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9486

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://xajibur.ru/award?keyword=how+to+train+for+5k+for+beginners PDF link annotation
    • http://testersairf.xyz/goodnight_moon_story_book_onlinet9ogf.pdfIn PDF document text
    • http://buyfastedcircle.xyz/road_death_uk_2019fg1cp.pdfIn PDF document text
    • http://laithub.pro/5935085559889vym.pdfIn PDF document text
    • http://thestablestl.com/gma_news_reporters_namesgkox8.pdfIn PDF document text
    • https://cdn.sqhk.co/pisapaxosabo/f4xpbii/84452254417.pdfIn PDF document text
    • http://7lessons.site/amyloidosis_treatment_guidelines56r8d.pdfIn PDF document text
    • https://cdn.sqhk.co/saguregifu/lhehjME/vinilebikepun.pdfIn PDF document text
    • https://direvegafazago.weebly.com/uploads/1/3/4/4/134491376/tetuxemusafi.pdfIn PDF document text
    • https://cdn.sqhk.co/mijajijem/ejfPhhF/baixar_app_story_saver_for_instagram.pdfIn PDF document text
    • https://cdn.sqhk.co/fasazani/tjjhfhd/zaxajewosod.pdfIn PDF document text
    • http://cabinetsop.xyz/factors_affecting_consumer_buying_decision_processm9aft.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/cup_of_jo_mothers_day_gift_guidexvugh.pdfIn PDF document text
    • http://mynasert.online/9036461699clp0g.pdfIn PDF document text
    • http://komoxam.rf.gd/kasol.pdfIn PDF document text
    • http://wexalaz.epizy.com/17798082633.pdfIn PDF document text
    • http://dibalata.epizy.com/nufuperew.pdfIn PDF document text
    • http://xadamodovupeniz.rf.gd/91738645847.pdfIn PDF document text

Related samples 8

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

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