Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10adaeaad135f3e…

MALICIOUS

PDF

89.6 KB Created: 2021-07-18 05:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d45b156313c6e6d65178960e5866b36c SHA-1: 61b92171278ffc71b31321c0ee6daa7ae22fb443 SHA-256: d10adaeaad135f3e50e8ee182a7b563450897b07e64e8b338a381e9020c26c9a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm with numerous URLs pointing to various domains, many of which are hosted on compromised CMS upload storage or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The presence of multiple external URIs and link farm characteristics suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://e-cluny.cz/UserFiles/file/93256989966.pdf In PDF document text
    • https://soccerauquebec.com/userfiles/file/kigixojovowibopupopa.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096089486b06---84071176054.pdfIn PDF document text
    • http://mtsskzy.com/userfiles/file/nuvobakunawaronex.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ddb508a0ea5---fopixevinimopugaz.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074126395e17---61678164923.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/7d9fe9bca6ca940c0e88f36d4e3ec3d4/80270398821.pdfIn PDF document text
    • http://amdind.com/userfiles/file/gadixazozepagudijufedu.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d22f7c8337---30270621904.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/xusekoginarevizijune.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/r2sapcohvdrjg87gkao39rv7os/85423156838.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3f0924f72---21619661474.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/40d3901dcc69d364cad53f0648765443/wulixejibenafirurujomexi.pdfIn PDF document text
    • http://ezibra.pl/upload//file/49208902207.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b8f171c4e39---vizufubigeripisibipifik.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/jitageditu.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/ada05745a2c947d52aa77202ebe6e732/31538921860.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/2e62ab5b72ddfdadeb444811015aa342/voturupat.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3ed97e34e---rodatakarezilovitudabuzem.pdfIn PDF document text
    • http://gshosnab.ru/userfiles/file/2253220776.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/fitidexubibagubuvew.pdfIn PDF document text
    • http://biblioteka-koneck.pl/ckfinder/userfiles/files/55827555173.pdfIn PDF document text
    • https://limpiezasinasel.com/userfiles/files/62558605670.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=to+and+fro+motionPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE123 10132 bytes
SHA-256: d6a5aacc998a59cdfb12aeac399b7eb65f07887268b38aec65103f4fb27c074c
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC9 19596 bytes
SHA-256: a1563dcc4c8c65c7c75961b7d25a1dfbc43334b65187dc64cd0c772c05d7d4aa
font_03_sfnt_off000143d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143D0 16064 bytes
SHA-256: 313b4d1b1f982e25284d2f4e6caf7c0c7767db1f375da95b613bc7d89e59efd8

Open this report in the interactive analyzer, or submit your own file for analysis.