Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d595d70b0d016df…

MALICIOUS

PDF

40.0 KB Created: 2021-09-05 18:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: af0dcf862acc70676d80e33c6826425c SHA-1: ee42c031a207c9cb228998cad125e4deb936af51 SHA-256: 0d595d70b0d016df3d4bd790fb992810358f24bb4c9c8ef0dfb53e979aae86e5
174 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9416

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://wastran.ru/uplcv?utm_term=12+week+workout+plan+free+pdf PDF link annotation
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9934838c8---137141395.pdfIn PDF document text
    • http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/pusisedamedobuw.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea9c6119d2---53163811335.pdfIn PDF document text
    • http://npi-management.org/ressource/site-image/files/6941329071.pdfIn PDF document text
    • https://laser123.com/geektic/files/34937002602.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/cf17b94a825bf52f4810e6cb70b757fc/45190497405.pdfIn PDF document text
    • https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/94385278250.pdfIn PDF document text
    • http://energosol.pl/images_cms/file/91060055749.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/0e0d94286b1849bd8a8ec0a979a3d12a/ninomifewulo.pdfIn PDF document text
    • https://tidymoney.com/ckfinder/userfiles/files/32506301204.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/papaxapifovulut.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a98685dae02---67074415101.pdfIn PDF document text
    • http://cuatro-pr.org/sites/default/files/file/kezeben.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5d0fa5ee0---ritowixijipalelivuvemak.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/85607202351.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fdca953d9a6ac116faab07e1721e8644/pimofajetitojiwutovo.pdfIn PDF document text
    • http://highspiritsmusic.com/ckfinder/userfiles/files/vijegeti.pdfIn PDF document text
    • http://chothuexeninhbinh.net/data/dulieu/files/puvevekoxedul.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/vosuvevapoda.pdfIn PDF document text

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