Malicious PDF — malware analysis report

Static analysis result for SHA-256 b71b31a56ae282e8…

MALICIOUS

PDF

47.6 KB Created: 2021-05-17 12:55:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68d862ca25009cd24f356300bd060f7e SHA-1: 6700501ca3cb06c77abd03ef77cb9dfc076817b5 SHA-256: b71b31a56ae282e86f9b5ae2ff170517fcda3e3cee68ba4784a326f745aca754
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The primary URL points to a site offering 'mcpe master unlimited coins free download game hack', strongly suggesting a social engineering tactic to trick users into downloading malware or visiting a malicious site. No scripts were extracted, but the embedded URI and document body content support a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/mcpe-master-unlimited-coins-free-download-game-hack PDF link annotation
    • http://learningarabic.co.uk/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://learningarabic.co.uk/images/rbx-free_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://learningarabic.co.uk/images/www-robux-us_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://learningarabic.co.uk/images/robux-2021_GM431946152.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_003_off00004c2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2E 26352 bytes
SHA-256: 66f28c69351ffcc9cd7acce3d081099c405620987c11e985cb2cb693530ba706
font_01_sfnt_off0000895f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895F 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off000095e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95E4 18912 bytes
SHA-256: 2495d9bbdfbd41392a26722b7d1029a4e9132e22aa6e9b8d4c4744142e94adf7

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