Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9128df693e7504…

MALICIOUS

PDF

65.3 KB Created: 2021-06-10 21:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 148ee36b68afeaab323d5f9381f96b07 SHA-1: 4c74727e65786a36ae124d7a7ed3efb029c58df4 SHA-256: 2e9128df693e7504a548747863753f3a682742c44e20cad5e7d30341769da6ec
154 Risk Score

Malware Insights

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

This PDF file contains a link farm pointing to multiple compromised WordPress sites, likely intended to trick users into downloading malicious software disguised as cracked applications. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics, along with the ClamAV detection, strongly indicates malicious intent. The embedded URLs are designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8377

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/uplcv?utm_term=autotune+pro+9+crack+mac PDF link annotation
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/4efbaa6691349d8800ddc2c808e51c65/62059015012.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/cea0b9d826212b035c6bd0536dc0bf5e/sajilitogafi.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/20692635942.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/033f569f957175d9569e95d5334dc388/36760241094.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b606b551ff2---23146990827.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c6f05dba6---42629044120.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/1bnc3i63cog2406769tvj2ati5/49420603183.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/93570706789.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e3f8df638---94506311204.pdfIn PDF document text
    • https://larrialdiak.es/files/galeria/files/69446559703.pdfIn PDF document text
    • http://www.celso.org/download/begufuvafunimo.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c063290700f---gezomezagonemozusewuvo.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e0c69e3de---wamiwabi.pdfIn PDF document text
    • https://noddy.nu/images/file/20651566915.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a7f0f7435a511701ff6e9061180260c2/37980409920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE654 5076 bytes
SHA-256: c24fcbdbc809b323a01385831040815a917604778776500aefaa30ceb6bd659e

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