Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa76d9a0e409dcb…

MALICIOUS

PDF

80.0 KB Created: 2021-07-03 11:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9ae19a9d5db0257f5bbb5d69b535a69c SHA-1: b476bd48fa62a6703312463de00ec3b02ac3203a SHA-256: 6aa76d9a0e409dcb612a261f1cce2adfc90fe866294124c55005c785e51d529e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites used for hosting malicious PDFs. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607b754ac4840---vavereb.pdf In PDF document text
    • http://altelaw.com/uploads/image/file/45928127328.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e03b33e46---fegovokoforupabaf.pdfIn PDF document text
    • https://telenovella-bg.com/files/jolazizusujur.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/594375242.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/7qik45projk102dkbjq3k18j79/pesojivefexafi.pdfIn PDF document text
    • http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/25452265444.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/boxixuparakubagimif.pdfIn PDF document text
    • http://tomlitkom.ru/ckfinder/userfiles/files/46729127018.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5df2f19b02---10714774057.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/126a0638qhnm9po867chn4c6cf/71678258691.pdfIn PDF document text
    • http://lideparts.com/userfiles/file/1620480247.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/89eb488205b008eecdffa8d44676f385/nibiruvo.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/cbf1673fd4e0cf8c1e5fc4893fd78725/36481576238.pdfIn PDF document text
    • https://vinacomvietnam.vn/uploads/news_file/63914244356.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8ba2ee579---rinujaxuzinonulupasipetu.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/javopafololozu.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/46618297347.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/17379068577.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c48e296ca9f---ketijuwu.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/xosusaluj.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/4aac3b8b500875a383f1e2c727321fe8/98477090798.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/86d563db661e5b2b41a1761c0b62d04d/64565649444.pdfIn PDF document text
    • https://smallislandcurry.com/wp-content/plugins/super-forms/uploads/php/files/fc96e975461586de8af0b813865b35ce/34309054408.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=iss+in+driver+licensePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CD 17236 bytes
SHA-256: bcdaf132da78ccbbf4c8a4114364a53e2840c7781652251f59758361fbf80609
font_02_sfnt_off00011cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD5 10000 bytes
SHA-256: 19e80a980c3fa528334deb6a9348b4b4942dcec57c5dc53e90b508865fa15cf6

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