Malicious PDF — malware analysis report

Static analysis result for SHA-256 44562b41a0996144…

MALICIOUS

PDF

72.9 KB Created: 2021-10-26 01:53:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 8146aa60762af9db94be6cbfae52dbf6 SHA-1: de974f299e441db07439a5d2492e710d38ef8c24 SHA-256: 44562b41a09961447b3a6982043aa69ab4497d6b94d10768356c0cf13b4a31e7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1616a188e58682---24378741038.pdf In PDF document text
    • http://steakpluspizza.us/userfiles/file/52710673741.pdfIn PDF document text
    • http://korytnica.net/data/files/76444675241.pdfIn PDF document text
    • https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/tonubatamizi.pdfIn PDF document text
    • https://hunde-katzen.at/soubory/14836638878.pdfIn PDF document text
    • http://normel.org/files/upload/file/3876689625.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/8127ee81bd05baa4aa8170431482cfd8/jemelurefojotexexikumez.pdfIn PDF document text
    • http://kengosushionlineorder.com/uploads/files/48701195987.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/37712675256.pdfIn PDF document text
    • https://migger.dk/userimages/file/14065808503.pdfIn PDF document text
    • https://metrosecuritynepal.com/assets/userfiles/files/pibak.pdfIn PDF document text
    • http://skncn.com/u/files/34252166401.pdfIn PDF document text
    • http://dailygameresult.com/editor/UserFiles2/files/74926691586.pdfIn PDF document text
    • http://cautrucpalang.vn/webroot/img/files/tuvineguvagemodubiweku.pdfIn PDF document text
    • http://www.enjoyvaltellina.it/admin/ckfinder/userfiles/files/34142218554.pdfIn PDF document text
    • http://www.gpe-el.pro/ckfinder/userfiles/files/dabifedexuteguw.pdfIn PDF document text
    • http://mrspk.com/ckfinder/userfiles/files/34380246981.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/nelalolulewu.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/gibolebegalipirisav.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/jutetodivonomaxixovitonut.pdfIn PDF document text
    • http://koreaseals.com/ckfinder/userfiles/files/sokosaganojopipuju.pdfIn PDF document text
    • https://tigapilar.com/upload/files/zibiwozoraxujalenos.pdfIn PDF document text
    • https://molecult.metallo-tests.ch/sites/web/upload/files/renelufalisud.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/D9plVHj2VOU/uplcv?utm_term=the+cultural+legacy+of+west+africaPDF 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_off0000b95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB95E 10776 bytes
SHA-256: 52cbded7afb6442cfad20d280b79de5e6d4487bdc49351d7b0eec737a7b2a468
font_01_sfnt_off0000d272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD272 16960 bytes
SHA-256: 1d5f70dd8468b9772f00b568f629a5ce0d20b466e335d6cce8c4cab7cea764f4
font_02_sfnt_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1