Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce40aa0f90cda45…

MALICIOUS

PDF

40.0 KB Created: 2021-10-02 14:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0abe23597acdf4cbc2400fe2eb5d71ce SHA-1: f6b050cabd7586f47a622718291bb5f0e0dd547e SHA-256: 3ce40aa0f90cda45fc9e177f205ec1c9bdbcff5c57d75e3c4835f309f64b36f1
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as a phishing lure due to its small size, image-heavy content, and embedded clickable actions. It contains numerous links to external PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8984

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
  • 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 40 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://oklogistic.lv/upload/file/vejelonezawok.pdf In PDF document text
    • https://artesapanaderia.xyz/aym_image/files/19726087059.pdfIn PDF document text
    • http://worldtile.net/jangheung/userfiles/file/pozefelab.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/32413740377.pdfIn PDF document text
    • http://dsagco.com/Upload/file/96323812624.pdfIn PDF document text
    • http://cokhiminhhien.com/media/ftp/file/83553808230.pdfIn PDF document text
    • http://zamdq.com/filespath/files/20210929032453.pdfIn PDF document text
    • http://kerrya.com/ckfinder/userfiles/files/52287411230.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/33262033510.pdfIn PDF document text
    • http://adice-area.com/pictures/files/20041971943.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133c5c8c38cd---47693766154.pdfIn PDF document text
    • http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/rinorafadubutikowezi.pdfIn PDF document text
    • http://bioaec.com/userfiles/files/jogujuxado.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/mabebujusat.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdc1ee3bb7---34624958992.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=as+someone+whose+or+who%27sPDF link annotation