Malicious PDF — malware analysis report

Static analysis result for SHA-256 c025a7fe9f96bee6…

MALICIOUS

PDF

66.8 KB Created: 2021-05-30 15:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19236030182218577f9ef67df0e686c2 SHA-1: 17941b04782d488a92739046848bd5026a0801b7 SHA-256: c025a7fe9f96bee626278150172d13c77c2499e786a4df6a3cef01fa3692b56a
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to compromised WordPress upload directories and other disposable hosting, suggesting a link farm designed to distribute further malicious content. The document body, though heavily obfuscated, appears to be a lure related to a book PDF, likely to entice users to click the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7605

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 http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8281425a2---zoxetivitofekivusulepune.pdf
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/6a8714c1c3efda2d3cdfb12cfaade4a5/kagajuwodikapex.pdf
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a463ac653e5---jituzarafuk.pdf
    • https://aradovan.com/userfiles/file/xisigidupapava.pdf
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5538546d3---kagobapijodam.pdf
    • http://www.deep2001.com/images/library/File/52012629483.pdf
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607feee17bca0---43671758558.pdf
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/fdbd8a249e707a001e78914945112f11/70203254206.pdf
    • http://taiyoaquris.cn/upload/userfiles/files/20210529203351.pdf
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d6e9a64f83---99179377763.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/4r43jvq35cof8ouslrb3oirvu2/36984573388.pdf
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/f0dbhec72fuaeoac6a9r9ajbg4/75660637829.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/123c61acab094ceaa0018fca54235197/37615806808.pdf
    • https://footballsod.com/images/ck-uploads/files/56234505391.pdf
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/00d5fd9e54a2a61b97b9df33e463c665/28860928335.pdf
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5ec1634f5---67721250775.pdf
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7c4e6bf07f573b9fba54e9823219ff71/lafesejux.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=the+ultimate+guide+to+body+recomposition+book+pdf

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