Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b3ee866b3e6fd3…

MALICIOUS

PDF

89.0 KB Created: 2021-07-09 20:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fd652e320e6fb95edd3bca3926453d55 SHA-1: 59d96ddabe5ffcc82ed3d200dd9341a9c02f3d3c SHA-256: e0b3ee866b3e6fd31e8bc9e27b869957c43fd951c70e5247ba6f2066927a2eaf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous external URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely leveraging a PDF exploit or social engineering to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://catamma.ru/uplcv?utm_term=physics+with+answers PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c875f92942c---61694387989.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/tocpkm4m6d032l56eadl5mllf0/74603365262.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/gakeji.pdfIn PDF document text
    • http://enjoy.sk/editor_uploads/system/files/60808805307.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/mufakipirumijajomu.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/42154948881.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d2fc358d4eb---memupulojurorapave.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1da25b12a---88315285745.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/44727730274.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/wokadozewulasivo.pdfIn PDF document text
    • https://siroyensao.com/upload/files/85600011029.pdfIn PDF document text
    • https://datatech-int.com/userfiles/file/49775293019.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/3a7ca9597e81aa04ff1613df28310778/rigukev.pdfIn PDF document text
    • http://montagnobozzone.it/userfiles/files/74739522823.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/72k6gd3pgq0ut3qg4m1r2gnq04/77492371513.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7fdb278be6---57044234509.pdfIn PDF document text
    • http://rajeshjshahani.com/clients/d/de/defaee86e9f1fedea086b53a5072ac2c/File/mosarejimuzubifanoxet.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/991cb78848ea830e79d4a2d9d600287a/riwogoperonakibi.pdfIn PDF document text
    • http://dothi.info/images/files/24450337778.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160c16020c2961---lonoluxoniniwob.pdfIn PDF document text
    • http://paletydozahrady.cz/ckfinder/userfiles/files/gobazi.pdfIn PDF document text
    • https://misionesmedellin2030.com/wp-content/plugins/super-forms/uploads/php/files/46d7r49htght0feud49gra87l1/35231577965.pdfIn PDF document text
    • http://biotop-zamosc.pl/userfiles/file/xukabafikedilonigaf.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de101e8cb2f---kesusexuku.pdfIn PDF document text
    • 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_off0000fc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8C 16548 bytes
SHA-256: d214468b027c12ed39536f5b0527d1ed95e7176b851b37f335db285fbd26bba4
font_01_sfnt_off00012796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12796 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FAD 10364 bytes
SHA-256: e6af46607a7af2ed4e628152dc7285fa5db76c939d5cc753038c7008c6a5674c

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