Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f572472b3b5b1e4…

MALICIOUS

PDF

55.8 KB Created: 2021-05-12 17:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ee09887d0282dcf46665b18d2e099e6 SHA-1: e92fdd53321d0129cc825c1bdd8b5201710f7718 SHA-256: 0f572472b3b5b1e434473a05abd51e1e290ddfdcfc617117229b94921438d64a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS upload directories, suggesting it functions as a link farm to distribute further malicious content or phish users. The presence of external URIs and a link farm structure strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6956

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://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/e29035ff2717bfa91a517edc251d937c/falupowurojaxamexababaleg.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160769ef08e7b0---7969843245.pdf
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/ldng9dmm9kgni81gngo4s046pa/rupepotasiwefowu.pdf
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/422f489dab78bbc135aa17b33b812b9d/sepodubusefovo.pdf
    • http://bitite.lv/media/txt/122/file/12100645959.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081c79561f98---xomebidom.pdf
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/e085fd30ef3116e72627cf871a1c26a6/wiwabirobibotiniwob.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160780bc85d607---topode.pdf
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160908b6b5eb49---terijijim.pdf
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce0bdd723a---801427239.pdf
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cdbeb06af---relubopajuzabivizomomo.pdf
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/bc440833394a63eec89bde9a2eadae72/gelamozefedixepilu.pdf
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608653a9107bc---13839792967.pdf
    • http://alarcon-v.com/editor_upload_image/file/nevosotajanivenatiwapamoj.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdf648ae85---50923916092.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=bcom+fm+full+form

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