Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ec41cd04ba5412…

MALICIOUS

PDF

55.7 KB Created: 2021-07-02 05:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b3b40c0526e404786572ebf0141f9a51 SHA-1: cc289cf589936d91ff606f5ae5d31e2949c45a3a SHA-256: 75ec41cd04ba541281125dba0c6d8cc82d37a76b5546d488bca6488f4d6ab7a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous links pointing to various websites, many of which appear to be hosted on compromised WordPress installations. The presence of 'utm_term' parameters in some URLs suggests a phishing or SEO manipulation tactic. The ClamAV detection and ML classifier further indicate malicious intent, likely to lure users to malicious sites for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5757

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://infrive.ru/uplcv?utm_term=the+virginity+ebook+by+ritika+pdf+free+download PDF link annotation
    • https://a2designbg.com/userfiles/file/76474143756.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/81ca3b3875305730bf6bd515d9dfaa05/xuliruzonuxugorixaki.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160c47a9c1ab71---46074474260.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/cn35soba9q7btmetq21agkaf93/86232377079.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160805da64d028---70465014547.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/df197e516e050cd0c15f370bf0b61ceb/18816795769.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7ae61ba6e---498658878.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c580e387ff5---2619945026.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/34bd02af785d3d63d00f25d27ad3ea37/xokegadimal.pdfIn PDF document text
    • https://elesud.it/img_pagine/file/90239393108.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/1f20059b724c78baa17f36af37f261d3/82673654695.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/b04dbb1c37f4dc8bb595cca2964962a4/siguvezarerijulivavevokuj.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/4707833026.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609d9b9bf11bf---67977811904.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1607eaa913be04---nifebowitila.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/7738842461.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/d47b19dd2aed99098299327e253d9fe9/borufixapezarerinojoz.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/litek.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/16283621768.pdfIn PDF document text
    • https://wittnebel.dk/file/33100174853.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803040d9037---bagamobunovoviranovoxiti.pdfIn PDF document text
    • http://northstarbaptisttyler.com/clients/a/a4/a4b4c2e389351fb2dee96c3f727c6a57/File/bifoji.pdfIn PDF document text

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