Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6afec28450aefe5…

MALICIOUS

PDF

36.2 KB Created: 2021-05-24 03:40:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a6d60b2dcba58f21673dffa078767591 SHA-1: 50dd722cf74a2e754c90e625c70599d0dc675928 SHA-256: d6afec28450aefe528fef85c22311486f700ffa227d34216877793e9a74a4cd3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/406889139/free-spins-coin-master-app-game-hack PDF link annotation
    • http://wiesbadener-marktplatz.de/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://wiesbadener-marktplatz.de/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://wiesbadener-marktplatz.de/images/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • http://wiesbadener-marktplatz.de/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://wiesbadener-marktplatz.de/images/roblox-generator_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_off00003337.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3337 25344 bytes
SHA-256: c36b650c72749a4ca6aa4db94fb65b1edeb22bf65f2375144953c07a34d0ddad
font_01_sfnt_off00006d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 17884 bytes
SHA-256: ed1ea3c4e7635b9f65a5e0b6798c92341d7c1feababf17669f4466b6be8364ea

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