Malicious PDF — malware analysis report

Static analysis result for SHA-256 006f6b0512afb4ba…

MALICIOUS

PDF

86.7 KB Created: 2021-10-06 00:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6fa4a083ec98d9ac9c2ed1f49fb242f1 SHA-1: 97a10f0986ec55d663114728f76938f73c59619b SHA-256: 006f6b0512afb4bac7ecf168ba422cee28a2747fecb1c61cef2d546f6487605d
156 Risk Score

Malware Insights

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

The sample was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with multiple URLs pointing to potentially compromised CMS upload directories or disposable hosting. The document body is unreadable, but the presence of numerous external links suggests an attempt to redirect users to malicious or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://sh-songshi.com/admin/upimg/file///46694609738.pdf In PDF document text
    • http://ebbers-schilderwerken.nl/uploads/files/49276139769.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1615054cc191fc---wizuvevipovi.pdfIn PDF document text
    • http://ecosdaliberdade.com/ckfinder/userfiles/files/bekoritenikojudave.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/sudituribukipefinu.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/7c67d64bd45510cc755db1e8d3c0d7f2/tamuzolusuvamux.pdfIn PDF document text
    • https://www.funes.gob.ar/ckfinder/userfiles/files/fegome.pdfIn PDF document text
    • http://champagne-marc-chauvet.com/images/files/jiwaketunogoso.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161414ae13d511---nuvixopomatev.pdfIn PDF document text
    • https://thediamangroup.com/_images/files/wolawotogezodepuwavow.pdfIn PDF document text
    • http://sourceit.ke/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/rumoxefaji.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/xegekar.pdfIn PDF document text
    • https://extractos.assaludips.com/Proyectos_PHP/gestor/images/file/59453407374.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16147442396c6a---viladurerapobol.pdfIn PDF document text
    • http://dailymaydemtien.com/userfiles/files/78230873557.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/baroverogi.pdfIn PDF document text
    • http://sten.kr/club/data/userfiles/file/20210907125844.pdfIn PDF document text
    • http://vers-ma.de/userfiles/file/38455377965.pdfIn PDF document text
    • http://timebank.ru/sites/default/files/photos/pagefile/laxolidaje.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/254fb8561d35fc7e7ec937235f5cb89e.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kaxumadubidozojiz.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/godotuf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=inspired+synonyms+in+englishPDF 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_off0000eabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABD 19924 bytes
SHA-256: b49dc47b152c5fcd12eedc70f7363a76322ff659613bd75fc82e74ca33eedbc2
font_01_sfnt_off00011d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D18 10644 bytes
SHA-256: e860dcb8da8a883e090911d439e6efc43838c0c2aaa2c812555aac067534a293
font_02_sfnt_off000134fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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