Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ce9f9c84beee6e…

MALICIOUS

PDF

68.4 KB Created: 2021-06-19 18:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f463dad03b2addcecbf5da04ac67071 SHA-1: c9085f976e741316d77b9d08609c4cd1d364d9f8 SHA-256: d3ce9f9c84beee6eba604b646e6f652e33b0efd6e2f508585190e0b6d7d0b21e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external PDFs hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains text related to "potion of fortify restoration" and application metadata, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8239

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://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/mhqqsqt5kvr0f4va86mbevrb5g/26961805483.pdf
    • https://ludifrance.fr/userfiles/file/62106865274.pdf
    • http://analogsys.com/uploaded/file/210385714060a657055303c.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b5ea6f36d---74392805746.pdf
    • https://agrimal.pl/userfiles/file/93500977143.pdf
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/ad5be2477d0c1f963087e45341bc5169/dafixul.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/4c3932216cf369faf6e236d136d6686b/60948829575.pdf
    • http://yoron.net/up/files/94854569619.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/51cacb0c28b24095e302bbe9d3056862/22310853705.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd8fc06f44---wuvijew.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16073ff45aa3e8---26920514155.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/vjamnp86mvbqmc6bude2cv7js1/xawini.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16083f4cd9da66---43044574211.pdf
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f168ecb97a---livebamoda.pdf
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bp1e355dkq9e51qfl7e48n0gf7/84392806659.pdf
    • http://www.malagatour.es/ckfinder/userfiles/files/juvego.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=potion+of+fortify+restoration
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e653.bin
b568c02fa0e72e003673a7dc444dc723662de6695b4f70328fa5f4d15fbd1c18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE653 4832 bytes

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