Malicious PDF — malware analysis report

Static analysis result for SHA-256 5118b979758eabe1…

MALICIOUS

PDF

45.8 KB Created: 2021-09-19 22:36:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b9a7d541542fda470b17c6bb8789d3ad SHA-1: 367c2a24eefdc8ca3053d161ee65b93df752bfea SHA-256: 5118b979758eabe15840f36a43363e00e399cb298f890b8fcc1b2fbb6c2a708e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF was flagged by ClamAV and an ML classifier as malicious, with heuristics indicating it functions as a link farm. The document body is heavily obfuscated and contains no readable content, but the presence of numerous external URLs suggests a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7423

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 http://pinzimoniofiumicino.eu/userfiles/files/gazobipeduwibat.pdf In PDF document text
    • http://www.smwiarus.pl/ckfinder/userfiles/files/83264901072.pdfIn PDF document text
    • https://amgaa.org/temp/files/5667384630.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/nojibevivez.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/xodike.pdfIn PDF document text
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/fixobixusukilafibunexi.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1631345598.pdfIn PDF document text
    • https://kristinanamaste.eu/files/29795541719.pdfIn PDF document text
    • http://ourgans.org/userfiles/files/82911147309.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/81263584601.pdfIn PDF document text
    • http://ornito-silesia.eu/userfiles/file/13298373879.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/vadubezumavumud.pdfIn PDF document text
    • http://amunt.madteam.net/ckfinder/userfiles/files/84689827803.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/94381159879.pdfIn PDF document text
    • http://xageunion.com/userfiles/file/72117251693.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/58436741511.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161405f3f3f2b8---budafatuwetujeru.pdfIn PDF document text
    • https://mobilaide.com/upload/editor/file/wibokokofupebunokogapa.pdfIn PDF document text
    • https://studioconcept-stand.com/fck_userfiles/file/96485233599.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613663dfb3ddd---34100021657.pdfIn PDF document text
    • http://pronobile.de/catalog/file/xoluvimepuwawevomode.pdfIn PDF document text
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/47947507305.pdfIn PDF document text
    • http://bidmitt.com/img/files/file/vedowupixasawizim.pdfIn PDF document text
    • http://magnumprint.ru/upload/files/31084341052.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=chalera+putt+2PDF link annotation