Malicious PDF — malware analysis report

Static analysis result for SHA-256 798f7ad36ca7dcdb…

MALICIOUS

PDF

93.8 KB Created: 2021-04-05 11:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aad7b3eb90c1e1f575502882da46b515 SHA-1: 0a09b75b2411c5075747830afe2a389410e25ee4 SHA-256: 798f7ad36ca7dcdb45ac1f1c9a788f082550415948a430a961c9bf707b428e65
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' suggesting a malicious intent to direct users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were extracted, the presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9388

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=fases+de+la+meiosis+1+y+2+pdf
    • http://repair-kompov.ru/it_s_under_the_blood_lyrics4hm1b.pdf
    • https://benezome.weebly.com/uploads/1/3/5/4/135400217/183840.pdf
    • https://cdn.sqhk.co/fogunivugame/fTOpRjg/flippy_knife_mod_download.pdf
    • http://tokigarodam.22web.org/29910480231.pdf
    • http://limecash.xyz/wigudibubcoakj.pdf
    • https://nozirokopen.weebly.com/uploads/1/3/4/6/134613575/a47234a841b1.pdf
    • http://tb-films.ru/5067063805266nly.pdf
    • http://datab.vip/24988190203h1s9q.pdf
    • http://dezobewasovof.iblogger.org/bless_the_lord_oh_my_soul_piano.pdf
    • https://cdn.sqhk.co/bemememu/KtLgfie/freeze_dried_strawberry_powder_asda.pdf
    • http://bioforcecolumbia.site/zozukezirunorobasewiwzhbsh.pdf
    • https://eaa62ee9-779c-4a2d-9f50-6c66b019a99c.filesusr.com/ugd/1cc777_92c61f916fd042739c17db703a3ff675.pdf?index=true
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_5be871d7c24941e28d868abda42d2b3b.pdf?index=true
    • https://0491f86b-060d-4f4a-be23-b0d01488777f.filesusr.com/ugd/faa7ef_800a4150e9994796a41301493ff29eaf.pdf?index=true
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_926487aa6c6c46abb662ca15190f52c1.pdf?index=true
    • https://599b09cd-7b6a-4758-94a3-08a08d316165.filesusr.com/ugd/628a76_800678b81890430e913937d36a3484ff.pdf?index=true
    • https://911f1565-2faa-4874-b261-330d521e7362.filesusr.com/ugd/f46427_db50c12c38d84dbcbe752f4117c6e89f.pdf?index=true
    • http://wulakutagugizi.rf.gd/schengen_visa_application_form_belgium.pdf
    • http://pimokizogo.epizy.com/agro_informatics_tools.pdf
    • https://bc881323-2374-4635-a2b7-f126f9929bd8.filesusr.com/ugd/546a35_13e7b52727c34f37aaa172b31cfedade.pdf?index=true
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_a7b95018b6d24bc089f53baf9d77c856.pdf?index=true

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