Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b59973a35113e54…

MALICIOUS

PDF

36.6 KB Created: 2021-05-21 16:54:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1b088f52bf79ade4bb4ce3d22b95ff37 SHA-1: 65c473dcc19dc49c2f6079b42f7db02346046103 SHA-256: 5b59973a35113e54531ef6c67d753d44d9adf026bcbb271b8e41c463072d7348
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a "free generator / game hack" lure. The document body and embedded links point to URLs associated with game hacks and generators, suggesting a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/easy-how-to-get-free-robux-game-hack PDF link annotation
    • http://kompanievska-selrada.gov.ua/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003392.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3392 24908 bytes
SHA-256: a8f9ce5f441d20e2a08815cd5b7770305f449d123a65dca500fd3890aa066cd0
font_01_sfnt_off00006c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C36 18688 bytes
SHA-256: c2d85703cc6a1447500036b33f7ea43eb33cd1174df43eac9260fbff62206025

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