Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d160733e42eefb…

MALICIOUS

PDF

70.2 KB Created: 2021-06-28 15:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 684e0d436f88953dc7754005904ecfe3 SHA-1: f0b9dcd217433b8aefd9524fd3d8660c4e6673c0 SHA-256: e2d160733e42eefb21b6e27efe694d56f74e791a93af0dd06a57a913832e7f76
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious sites or host further payloads. The document's structure and embedded URLs are consistent with a phishing lure designed to exploit SEO or distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6717

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://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883fb178985---gubivo.pdf In PDF document text
    • https://avonsteel.com/UserFiles/file/36656301824.pdfIn PDF document text
    • https://artenika.pl/fck/file/zupikimonojesikivagirexe.pdfIn PDF document text
    • http://xn--939a66v0zjo3bcvdmrp.com/data/ckfinder/files/lizuvavizexufibeg.pdfIn PDF document text
    • http://neonatal-surgery.ru/userfiles/files/69106447414.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/rewesovukogezej.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/50f4d4cf91a9ebe8c08124874ad3ed22/pekawowiputopilelabusizox.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/natcdc7ilftbi216egr5q84iol/21078583050.pdfIn PDF document text
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/7d8eb79a27b09be20ae81c0355e09127/51051149861.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160d34019b7590---kusimagojaj.pdfIn PDF document text
    • https://mlmrockstars.com/ckfinder/userfiles/files/8257744902.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/n2bd5usetgehej60c51ma489ea/5439320825.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b591e0cad9f---53143209471.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/852d92181a2f5b90937a3f958b7fecb5/64306849357.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/nelivadamovutu.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/39d9ksn2mucftok9b0lsal3hab/46809095505.pdfIn PDF document text
    • https://susta.vn/userfiles/file/xukikojodexat.pdfIn PDF document text
    • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/xutorazazizejomifutide.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/vigiguvowerofuturefefosig.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/sotofetitulibab.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/vfcqn8ptnrhqecm9e1r5rh7tu5/53731813004.pdfIn PDF document text
    • http://amandamaitland.com/images/file/97794698983.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/ddd2e46a9ea1d83a68f125ab4b47e8c4/logutebopodebegelenusojed.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cd8cbc2f668---nefigepedefitedusiwega.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=xenoblade+chronicles+side+quest+guidePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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