Malicious PDF — malware analysis report

Static analysis result for SHA-256 2809eb1bdb62cff2…

MALICIOUS

PDF

74.1 KB Created: 2021-09-21 03:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: f0340e114290627a07dc90ae7c06022b SHA-1: 2aebb01acb8b62d73337cddfec1807ec09599b40 SHA-256: 2809eb1bdb62cff23a5a24a85b29cff8ff071c1eafc6538049fb578e30d7df92
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many hosted on disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The embedded JavaScript is likely used to redirect the user to one of the numerous malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6879

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://philabc.ru/uplcv?utm_term=dead+zed+unblocked PDF link annotation
    • http://4reality.cz/userfiles/files/xebod.pdfIn PDF document text
    • http://espicycooking.com/files/file///lanobogexonotiwidulen.pdfIn PDF document text
    • http://taxfreepoint.com/file/37880237231.pdfIn PDF document text
    • https://jeanmarcrobion.fr/userfiles/file/26427201682.pdfIn PDF document text
    • https://yomadesign.com/userfiles/Proj_Name/files/xobanaraleluxijativopox.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140d4c77980c---32603702494.pdfIn PDF document text
    • https://simbhaolipower.com/images/file/binusewofodobusazosida.pdfIn PDF document text
    • http://zimmerei-possert.at/4428430164.pdfIn PDF document text
    • http://ersenergy.com/UserFiles/file/74958377089.pdfIn PDF document text
    • https://clinicaalcantara.es/sites/default/files/userfiles/file/46622899747.pdfIn PDF document text
    • http://aolisenjiancai.com/data/files/6614432016.pdfIn PDF document text
    • http://synhbio.com/upload/files/wizowelifib.pdfIn PDF document text
    • https://rdw-wolf.de/backend/ckfinder/userfiles/files/jinukinoxi.pdfIn PDF document text
    • https://rajatotogroup2.com/contents/files/21410538749.pdfIn PDF document text
    • http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/72356308925.pdfIn PDF document text
    • http://frezerovka.by/images/fxeditor/file/35910218709.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/741d0358418a91e75e886ff0c30b34a7/27388623119.pdfIn PDF document text
    • http://tjchenxing.com/filespath/files/20210918030236.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/74257765949.pdfIn PDF document text
    • https://ozsersogutma.com/upload/files/laromugebezufupimedes.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/96152112909.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/49315663655.pdfIn PDF document text
    • https://padservhosting.com/userfiles/file/72834806794.pdfIn PDF document text