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)
MD5: 835990a7b642a868667ef079baea4d2a SHA-1: f835b86e66b6e052aec13123b1200a3d8967ca55 SHA-256: 1160e6acccc729e9ab2f152d2d2f88c3b1f281635e535992069cb89a99daf114
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which are disguised as relevant content for popular search queries, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and external links are indicative of malicious activity, likely involving the exploitation of PDF vulnerabilities or social engineering to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9486

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
    • http://testersairf.xyz/goodnight_moon_story_book_onlinet9ogf.pdf
    • http://buyfastedcircle.xyz/road_death_uk_2019fg1cp.pdf
    • http://laithub.pro/5935085559889vym.pdf
    • http://thestablestl.com/gma_news_reporters_namesgkox8.pdf
    • https://cdn.sqhk.co/pisapaxosabo/f4xpbii/84452254417.pdf
    • http://7lessons.site/amyloidosis_treatment_guidelines56r8d.pdf
    • https://cdn.sqhk.co/saguregifu/lhehjME/vinilebikepun.pdf
    • https://direvegafazago.weebly.com/uploads/1/3/4/4/134491376/tetuxemusafi.pdf
    • https://cdn.sqhk.co/mijajijem/ejfPhhF/baixar_app_story_saver_for_instagram.pdf
    • https://cdn.sqhk.co/fasazani/tjjhfhd/zaxajewosod.pdf
    • http://cabinetsop.xyz/factors_affecting_consumer_buying_decision_processm9aft.pdf
    • http://help-lnstagramcopyrights-verify.com/cup_of_jo_mothers_day_gift_guidexvugh.pdf
    • http://mynasert.online/9036461699clp0g.pdf
    • http://komoxam.rf.gd/kasol.pdf
    • http://wexalaz.epizy.com/17798082633.pdf
    • http://dibalata.epizy.com/nufuperew.pdf
    • http://xadamodovupeniz.rf.gd/91738645847.pdf

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