Malicious PDF — malware analysis report

Static analysis result for SHA-256 499906110acf716c…

MALICIOUS

PDF

56.3 KB Created: 2021-06-12 21:01:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b3458cabb7d25a280db51e94ff547904 SHA-1: 54752922df8549b139b4089c1e267fd382afc563 SHA-256: 499906110acf716c9e9a13128a9beb537d19c01f82fb494b3263ad891678819c
154 Risk Score

Malware Insights

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

The PDF document contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports its malicious nature. The document body, though heavily obfuscated, appears to contain keywords related to game roms, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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://garglob.ru/uplcv?utm_term=gamecube+wii+roms PDF link annotation
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/ftsg6m8fjev8vfl1ons07n2unu/borobatowirudutoro.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c25d96b0c68---6843763539.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160849c9a51d0f---tiwewetisakixododudugod.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/c4b076bdcaeaf9601ae9c706eec7a114/poroverowafulat.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/347e8e3d695d805e60f5233b99238486/mavapavamikepe.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/loa39git7pan6r17jhqreegvb0/1699289921.pdfIn PDF document text
    • https://latework.cz/soubory/ligukazes.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac735187253---gutopedovarazuxegudopeva.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b76ec013c3---vejewepitufazezepa.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/45522451849.pdfIn PDF document text
    • http://aromamahabaleshwar.com/ckfinder/userfiles/files/43416663171.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b62c369d4a4---wipafezuxobin.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/epalsh9ma525hm2p2g0fpsduph/mefofopafu.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/d0080715375f52d9c519cecd6e70da8b/74563693844.pdfIn PDF document text
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606f84213e883---39870178735.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607023c9f1130---22914140334.pdfIn PDF document text

Related samples 8

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