Malicious PDF — malware analysis report

Static analysis result for SHA-256 94112c83743f47c9…

MALICIOUS

PDF

72.0 KB Created: 2021-10-03 01:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 871a49542701cfc21306c3f63394b1c8 SHA-1: 2151df067b5e904e191d58cc2f4b565cbf8d3d45 SHA-256: 94112c83743f47c97ee2cb1119cde7265687629cb55026ea51c8e3d872d6c761
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to potentially compromised CMS upload directories or are part of a link farm hosted on disposable domains. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs suggest it is designed to lure users to malicious sites, likely for phishing or malware distribution. The presence of multiple compromised or suspicious domains indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://echipamente-scule.ro/userfiles/file/35360232630.pdf In PDF document text
    • https://lexcyberia.com/userfiles/files/pumupuxipokufa.pdfIn PDF document text
    • http://tpokebar.com/uploads/files/mosuvevomil.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/79118966184.pdfIn PDF document text
    • http://businesslegalgroup.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fomodunawuxapizaxofufop.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/80405846586.pdfIn PDF document text
    • https://konchris.com/userfiles/file/1633106106.pdfIn PDF document text
    • http://oroblupiscine.it/userfiles/files/29163107678.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e4fe559c2---xagiz.pdfIn PDF document text
    • http://wxhsbl.com/ckfinder/userfiles/files/20210909_070419.pdfIn PDF document text
    • http://juentai.com/userfiles/files/88961261582.pdfIn PDF document text
    • https://7mark3t2-7aya.com/contents/files/21102942579.pdfIn PDF document text
    • http://karat-dobremiasto.pl/userfiles/file/miliminenumufejifuful.pdfIn PDF document text
    • http://www.eatvirukai.lt/uploads/files/22945563657.pdfIn PDF document text
    • https://xn--72ca1bzcdf9cg5df4n5a8cei.com/userfiles/files/siwajibojoxip.pdfIn PDF document text
    • http://aimic.com/userfiles/file/20177065097.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16140710ee9b54---68120966482.pdfIn PDF document text
    • http://xn----7sbndn5at.xn--p1ai/uploads/files/wopuwi.pdfIn PDF document text
    • https://sanaspinler.net/calisma2/files/uploads/nirebiwapumisedonolaroja.pdfIn PDF document text
    • http://texmet.pl/userimages/file/vafagatomuwexa.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/buvul.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138200fb36f6---23453410363.pdfIn PDF document text
    • http://paradisetnl.com/FileData/ckfinder/files/20210927_B3D7788AF002056D.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/manofonexevikumadenoga.pdfIn PDF document text
    • https://marblo.com/app/webroot/img/files/20912031731.pdfIn PDF document text
    • https://peptidturkiye.com/ckfinder/userfiles/files/xeseromug.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=c%2B%2B+define+abstract+classPDF 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_off0000b648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB648 16704 bytes
SHA-256: 55cac60a2693c15470de1fd6ff3ebba144f2a9d7cb4d4ad7a186c2f79f4e71ec
font_01_sfnt_off0000e0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AE 10520 bytes
SHA-256: 880e70d49221565dc6f0991c928b7f837a2716f3059c478ee28a24500715e01e
font_02_sfnt_off0000f8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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