Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee64484beebd9610…

MALICIOUS

PDF

64.8 KB Created: 2021-09-29 15:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 027d6fbf72c31aecc706b18a75384a59 SHA-1: aa9a819595cf92d23e8bdd342df746417d22b8e1 SHA-256: ee64484beebd9610759e9144a7f2f526fdfd49f797465cf05b523a0ea0e3a27b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, with one heuristic specifically identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6870

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://pixomot.ru/uplcv?utm_term=haikyuu+games+for+android PDF link annotation
    • http://madang.eu/f_pds/fck/file/mumegosovaz.pdfIn PDF document text
    • http://lexprikson.com/admin/style/images/userfiles/file/78237959178.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614021af7ee2f---xilafoker.pdfIn PDF document text
    • https://wic-net.com/userfiles/file/gazaxenuge.pdfIn PDF document text
    • http://fantasymusic.it/userfiles/files/zogapexajux.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614408c21f680---menifisifin.pdfIn PDF document text
    • https://jobtiara.com/files/files/76800215147.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/44766602616.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/78153188597.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///91763025526.pdfIn PDF document text
    • http://galluccifaibano.it/userfiles/file/jobazesawi.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/bawekul.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/25747032623.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/90727954631.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/xuzidogozus.pdfIn PDF document text
    • http://globalbizkorea.com/userData/board/file/41223865179.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/lutovekanel.pdfIn PDF document text
    • http://kriosispl.com/cote_dor_import/admin/ckfinder/userfiles/files/pugugoxizepaxem.pdfIn PDF document text
    • http://sosonomo.com/ckfinder/userfiles/files/xibonuzomivupekaze.pdfIn PDF document text
    • https://catbasailing.com/upload/fck/file/89986081643.pdfIn 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_off0000aad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD1 10848 bytes
SHA-256: c7d46c8627ee520d8cbcb3cad61c5100708391720897651c9851fca1efad581c
font_01_sfnt_off0000c39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC39D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAF 16524 bytes
SHA-256: c601831a6d9d1db776cc1a8bb87960aaacc4e10306e4334de329ed273f400125

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