Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbf313914a6221c…

MALICIOUS

PDF

37.3 KB Created: 2021-09-13 15:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 63257898669d6edbc5f23c619762f169 SHA-1: 4acf9fb7c4ecc8e574d44dcbd7bb278665b8a492 SHA-256: bdbf313914a6221c94f7f589cd4fdee40e78b289256e55669fa9566ff5c425c0
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of an image-only document designed to trick users into clicking a link. The embedded URLs, such as 'https://nomylo.ru/uplcv?utm_term=market+helper+apk', likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6667

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://nomylo.ru/uplcv?utm_term=market+helper+apk PDF link annotation
    • http://internet-trade.cz/UserFiles/file/94127678912.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/zujofofiridiz.pdfIn PDF document text
    • http://whatifitspossible.com/ckfinder/userfiles/files/ratazazukovaded.pdfIn PDF document text
    • https://aiwcecckolkata.org/FCKeditor/file/gigodix.pdfIn PDF document text
    • https://elsadaulte.com/ckfinder/userfiles/files/91602539097.pdfIn PDF document text
    • http://studiotecnicobergamaschi.it/userfiles/files/jesudetesesawosavawuro.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/39932572950.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dc9e58d0fa---dawimozizisedofozujijan.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.