Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da3008caf229f6b…

MALICIOUS

PDF

89.4 KB Created: 2021-07-18 04:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 33799be5192d184af0ede22a7dfb0f21 SHA-1: 036ebfe68a8998f200dd3483bfae788f0b3ab49f SHA-256: 3da3008caf229f6b54331ff8ffd39e21f2669f0ded7701c7d6e88ce1d6030fff
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting it's designed to lead users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfa6597fc31---xonitirejataxegokaxuw.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3eb47af47---23455329586.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/66288053561.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/4pt9laa2d2p4t1h84ncr4jk4bm/sagalani.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4616c7bd13---37765972703.pdfIn PDF document text
    • http://www.cbs-emballages.com/upload/file/vapalarisawutebebe.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/rb4eh8fvu80p28kl2c1dpn921d/47652668401.pdfIn PDF document text
    • https://efnnma.org/files/file/wepegalelosimirikeju.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ede50dc9bf0---21640596291.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/4ac604726be613a1cc4ff91f97b97dbd/30272350080.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/d677c16c2d4ae8bdc33a8c9021803095/46754616739.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/2near4gl7jjjht85u5lgcc2in7/tadafegikipinuterari.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b7ee54462---nogajutu.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/tovijizekok.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160be22b86f838---zojepivanegobolimopot.pdfIn PDF document text
    • http://opusbiz.kr/data/editor/file/174623871160f34979ce839.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb34994591---wibabukijusapa.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/f96faa02d62c2745891eca8178f3c0f5/mitifatusemoj.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/18324485909.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/sodisupunozusifazejijuzor.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6951aec6b---wuferonovaroxete.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e03c05f5fb---xufajekivifalujifixaseso.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/1b9ba04b0aaa7973621d5b8e5d628a41/jorefuzakef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=last+day+of+summer+phineas+and+ferb+songPDF 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_off0000f791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF791 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA8 11212 bytes
SHA-256: 49d22d00bda7907ce794947a1cd1ea2e2a46e5ca7a141f8a1858f02338e4cc5a
font_02_sfnt_off00012953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12953 17932 bytes
SHA-256: 8cb3d75c7096c8aa67634322717b1a517f2d87e171daa1270fd6170235fd92e7

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