Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1875d7aeefc0783…

MALICIOUS

PDF

70.3 KB Created: 2021-07-06 14:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 5de3eaca838eec5041472e589f1aba69 SHA-1: 746ab1f0753ff8c309f83dfb1f031b742090cee0 SHA-256: e1875d7aeefc0783fa385414d583d96a543cdac7d7b5fb28bea05fbf2ef9cdf2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. The presence of embedded URLs and the nature of the links suggest this document is part of a phishing campaign or a malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bf51363a925---womajoxuxadiliw.pdf In PDF document text
    • http://55pluscommunityspecialist.com/userfiles/files/35772325031.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f931d2a69f---26597423407.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/1dqhomuaisv9v7095k22oqhf6j/bekexavedaxavenomupaduti.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/65691959620.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/kilububizibukoxipixaku.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1622288305.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608019eb3bdbe---76314276183.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/5216127708.pdfIn PDF document text
    • http://termocity.by/pics/files/lanelevabawuxitaweramuno.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082578d29c44---83938407868.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c1af5587e52---paparuponisotufemebebaweg.pdfIn PDF document text
    • http://meyras-tourisme.com/ressource/site-image/files/tozufagekopowijut.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/60469095081.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/21478fug9dd746rjvlor46m8e1/rofafopovupikuxima.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c14b75d6de0---kekonekupinuxoragaga.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/94238741741.pdfIn PDF document text
    • http://smn69.com/clients/866038/File/borafinakuxikutobowed.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608536afe08a3---rojanavaditisabimefopapi.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/gowelabegutuwewexoxi.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afab330be46---widiv.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c25dcdc43---gesalisizapu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=how+long+is+flight+to+hawaii+from+chicagoPDF link annotation

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