Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59c727034a6eb09…

MALICIOUS

PDF

64.0 KB Created: 2021-09-16 13:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: defcdbd0f0f7715c4849a28b70d0286e SHA-1: d23fbf39753023a020db41685744275f4938a66d SHA-256: e59c727034a6eb0982ea3bdd3075c530a6711ad61a1b0c9654103d07c0dc1560
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, indicating it's designed to redirect users to potentially malicious websites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5692

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://oniceh.ru/uplcv?utm_term=indian+train+loco+pilot+game PDF link annotation
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613f903c45b4c---tijoxunexu.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/matojegele.pdfIn PDF document text
    • https://kalyna.ua/sites/default/files/userfiles/file/vagekofojolufufokizosu.pdfIn PDF document text
    • http://fanghsin.com/uploads/files/202109141020299970.pdfIn PDF document text
    • http://ffarchitettura.it/userfiles/files/zaravexofinenozakafiz.pdfIn PDF document text
    • http://ambvetsanprospero.eu/userfiles/files/jurelutu.pdfIn PDF document text
    • https://eric-parnes.shortex.com/ckfinder/userfiles/files/1146424765.pdfIn PDF document text
    • http://ateliergermain.club/sites/default/files/file/juzasixelefunibu.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/hdjembaeagdj3srqggug6cvm89/8485728096.pdfIn PDF document text
    • http://d2dgroup.net/upload/files/gosowipelikogebo.pdfIn PDF document text
    • http://perfectionistpaintingnj.com/ckfinder/userfiles/files/dolekusogejikaganiv.pdfIn PDF document text
    • http://jingmingtai.com/filespath/files/20210905230231.pdfIn PDF document text
    • http://eldmsh1.ru/js/ckfinder/userfiles/files/51825003655.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/80297456902.pdfIn PDF document text
    • http://www.somdattabasu.com/fckimages/file/71566024474.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/85414339052.pdfIn PDF document text
    • https://profipreklady.cz/www/ckfinder/userfiles/files/20188221216.pdfIn PDF document text
    • https://sgotomotiv.org/upload/files/9623897308.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210909163115210032.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210909082734.pdfIn PDF document text
    • https://altsovmun.ru/userfiles/file/lijexisovifadoxerejipemo.pdfIn PDF document text
    • http://merrygoldholidays.com/ckfinder/userfiles/files/wenatunezexob.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/32942620755.pdfIn PDF document text
    • https://fasleh.net/Files/files/99852076441.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/fulitawejofilojilupag.pdfIn PDF document text
    • https://b2cdemo.tickets.com/content/files/majaderotumude.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE14 10640 bytes
SHA-256: 00115413a6defb69799e422c8db79001f41352d839edf49f925c55940205676e