Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbde41e5ae67e767…

MALICIOUS

PDF

38.9 KB Created: 2021-05-24 02:48:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 65e7a31b39bb03669e2ebc7fbaca0bdf SHA-1: 6778454509e7236a94d15b4e3b7078e4b5ee392c SHA-256: fbde41e5ae67e7671fa6224b1fa7f738191e98140a3fe687427bc459652f12e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded artifacts also contain references to game hacks and generators, further supporting the lure. The embedded link likely leads to a second-stage download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/roblox-speed-hack-game-hack PDF link annotation
    • http://domaizdereva24.ru/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://domaizdereva24.ru/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003182.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3182 25076 bytes
SHA-256: 913994f5558b1b510439981211b3d3e4ba13f3df64c05825165491aa6d3c2483
font_01_sfnt_off00006b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7586 18532 bytes
SHA-256: ecd25e1cae784267f5a646f1b70b1ce742945d3ce40e95dc5b3aacf46c412aa4

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