Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb9874da2f5edd1…

MALICIOUS

PDF

48.8 KB Created: 2021-03-27 11:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c7b92d34a63f80f04c03d956ff937837 SHA-1: 3ac0192b30104cbc733aea3fa9e9b526115279e0 SHA-256: 2fb9874da2f5edd1056c3b0d48947a03487aed681aec16918f959cfdb84165a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to SEO-optimized PDF documents, indicating a link farm. The primary suspicious URL identified is 'https://gimoguvi.ru/award?keyword=importance+of+symbolic+interactionism+pdf'. This behavior is often associated with phishing or distributing further malicious content. ClamAV and ML classifiers also flagged this file as malicious.

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://gimoguvi.ru/award?keyword=importance+of+symbolic+interactionism+pdf PDF link annotation
    • https://cdn.sqhk.co/nivazesoj/jcnhehb/facebook_app_manager_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/Ejcgdjh/dabajokixu.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/gfXhcjf/vekuxurenawamaxenawilakin.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/27389967438.pdfIn PDF document text
    • http://gevowurarabaj.rf.gd/what_are_physician_service_codes.pdfIn PDF document text
    • http://giwuvupajot.epizy.com/acute_renal_failure_in_pregnancy.pdfIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_eb5769ee6c12445a84b7bfa71fc0320c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/vazujejaxevekirav.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/gabaperabudetijodimufexeb.pdfIn PDF document text
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_3c248712ca61443dbfcb275d28d1f1c3.pdf?index=trueIn PDF document text
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_d2fb08dffd1c430f828eb6ee2ab4162c.pdf?index=trueIn PDF document text
    • http://xujamaxopubisa.rf.gd/what_are_the_4_quadrants_of_operant_conditioning.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_e55abf5a556942ad8f56a23d41c4f096.pdf?index=trueIn PDF document text
    • http://pamubaj.epizy.com/walmart_queen_platform_bed_with_storage.pdfIn PDF document text
    • http://sosukaf.epizy.com/easy_english_sentences_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/birthday_greetings_photos_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/41563702561.pdfIn PDF document text
    • http://melaworogafema.epizy.com/jever.pdfIn PDF document text
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_cfca4cd1c9974f23b015953606455b95.pdf?index=trueIn PDF document text
    • http://kusogit.rf.gd/vumabewigafofela.pdfIn PDF document text

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