Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b69630f2f29f919…

MALICIOUS

PDF

49.9 KB Created: 2021-09-23 14:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4553eea0245f4bd6ac98a03cbcac8581 SHA-1: c164e9bfbcaae4f7422aa41b04e0780ecbf92edb SHA-256: 5b69630f2f29f919d0f45b9bc4b9607df7212781ca2015a68552c55f4a429007
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that point to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, but the structure suggests a link farm designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6663

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://wastran.ru/uplcv?utm_term=pokemon+xy+3ds+rom PDF link annotation
    • http://yuh-tarng.com/userfiles/file/rojomuxidutaj.pdfIn PDF document text
    • http://oldmotorsclub.com/files/file/dukamuk.pdfIn PDF document text
    • http://80tner.netsociality.com/upload/files/jiwedikazinumupuzuj.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/95664525315.pdfIn PDF document text
    • http://hawaiianhunareiki.it/file/pefobofovorasorevuvew.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/60086948420.pdfIn PDF document text
    • http://otohondamientay.com/upload/files/bolujokobanejapulavodozut.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/gabotijal.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/d401b061ea3876f045913025ea557db5/85984698869.pdfIn PDF document text
    • https://tezerwatch.com/file/upload/files/09-10-09-56-36-51.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/mivatir.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/32945166bcf0eef184453a0854e6cea7/43856091075.pdfIn PDF document text
    • http://canavesiobruno-architetti.it/userfiles/files/82717355704.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/74423632547.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/fukupok.pdfIn PDF document text
    • https://sharks-cz.cz/images/file/21445497426.pdfIn PDF document text
    • http://residencelesaline.it/userfiles/files/44921991682.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161380d04334f4---45066682592.pdfIn PDF document text
    • http://saopauloairporttransfers.com/ckfinder/userfiles/files/98465510120.pdfIn PDF document text
    • http://mezon.jp/userfiles/file/juzulus.pdfIn PDF document text
    • http://pro-group.ru/userfiles/file/furozexutezuxikesapibim.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/161436cfc80535---51077903184.pdfIn PDF document text
    • https://www.asoriofrio.org/ckfinder/userfiles/files/92533771884.pdfIn PDF document text

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