Malicious PDF — malware analysis report

Static analysis result for SHA-256 162aff1c65ebd239…

MALICIOUS

PDF

70.8 KB Created: 2021-06-17 14:38:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4dd9ebd2b5bcfa5b793379c75fd57219 SHA-1: 1901542d6c3f97945eecedb161ffc8cf932f27e0 SHA-256: 162aff1c65ebd239d33cb56f8e6f0f9fb106699fa694cdab9cb2f609c4d01227
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 phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious files. The document body, though heavily obfuscated, contains text related to movie downloads, likely a lure to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9684

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.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/2d9aa391fd49ab123cad97561f001a37/90463672070.pdf In PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160888e5d168bc---pefuzozalulemapola.pdfIn PDF document text
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c05fd836559---59366833870.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/juligeporepav.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/f7v4eajmue636iqngnc8dnvfk7/bosora.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/e2mddo6mefg67ffnmt5n8kafop/44883553775.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/e1a003e8935462e300dde604c0e38db6/wefajevawijolifovakuv.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/kasekijonemefalekut.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba89d9ebd09---bivewo.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/8f22e80dd6298af4b34277c1da248c2b/40857181307.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/forejilujusevajad.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/0f91463bf1b558f5bde76e50512966f9/pesevovizanorulafunesa.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a95fd3996a---3710169667.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/3133d981fba4a9ca0418703b24fc753f/89954904886.pdfIn PDF document text
    • https://appfacile.it/file/zuwamisagojibafipumuvakar.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c24b89cdd8d---65517304149.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=shadi+me+jarur+aana+full+movie+download+in+hd+moviescounterPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 5592 bytes
SHA-256: cf98692016d8828f8a5202e02d4eb1d67d6180d2518a7511a40eaae21b9716eb

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