Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4fdf4277b335a5…

MALICIOUS

PDF

39.4 KB Created: 2021-05-21 17:06:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4e758b6efc95ba63a6ac62275c63226a SHA-1: ca4175cda1a0ad1bac6090bbeb89f99ee8da066c SHA-256: 1a4fdf4277b335a572c92ba1de4d4ea14582ca2e8ccb96aa80bf7369e375810f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that explicitly promises a 'free generator' for Minecraft, a common lure for scams. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this intent. While no scripts were extracted, the presence of embedded URLs and the document's content suggest it's designed to redirect users to potentially malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7976

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/479516143/how-to-get-minecraft-for-free-on-mac-game-hack PDF link annotation
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-daily-spins-link-2021_GM406889139.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_off0000356f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x356F 25720 bytes
SHA-256: 357f089c0f184277705cbbd2ec6fd31a4a2551ecca28af8a0b6452da01fd1b74
font_01_sfnt_off00007007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7007 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000079b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 17872 bytes
SHA-256: b6208a51cd80fab2e9318da305006c0e70657a6f065b62408d4ccaae69eb5aa0

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