Malicious PDF — malware analysis report

Static analysis result for SHA-256 60351fc264b10011…

MALICIOUS

PDF

78.4 KB Created: 2021-06-25 23:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6921c76a8228098128fc7ab2df8c372a SHA-1: 6f9b60c9317548b142b7e7f216097f1e90956aa6 SHA-256: 60351fc264b10011357731cb2a83bd6613e743bac7b67a0bd2d5019798ea51a0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised or disposable hosting. These links form a link farm, a common technique for distributing phishing lures or malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://bajcsidavidfoto.com/_user/file/95339116046.pdf In PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16086be91db971---rasugigumelojoparaze.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b3220275b6c---legisupodukigub.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/dirosix.pdfIn PDF document text
    • http://studiozammuner.eu/userfiles/files/1268930321.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/8fafa7b1a47fae54e0d465bc85dcf09e/43010650895.pdfIn PDF document text
    • https://digireg.nz/upload/91727551917.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/35560685554.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a02e7348561---kutajetome.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16085c99e0d31f---36311742056.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f1d0c9e51---tamorugobetatuxegalil.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b560355f34---sokijuzamopokok.pdfIn PDF document text
    • https://andrejc.si/files/file/15307783472.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/0524d0e65a78ba80a9bc40f41b545b52/11702769234.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/946fb727593a43243523118df2183339/nuloma.pdfIn PDF document text
    • https://sharadsangam.org/UserFilesTwo/file/62597851869.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/mipoxirabesagi.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/69004652641.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/33659897536.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/621eed2c8d3f78645f71628d2aef058c/8257081056.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a631bb966a1---tijunuparejatevami.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160c76f9d7077a---97031106438.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/dc9a35vklirqc6epc88vvnfneh/jivexowedawatozivajisabiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=convert+array+to+collectionPDF 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_off0000ce60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE60 10268 bytes
SHA-256: 2445633c65d3fd7c74263b47eaf2b4ce8fc03b0b13b3f4f01b5afbef612d55f0
font_01_sfnt_off0000e5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fdba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBA 17672 bytes
SHA-256: ce168aaec20cf50a92b55c84f0c7ca96d219cceb6837cb1425d4cdff073e2922

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