Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff754f33b0c3ed09…

MALICIOUS

PDF

48.7 KB Created: 2021-06-03 07:54:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ce2fe36ded9c1b7b84047c5b64d9e06d SHA-1: 9712b1f487d9a4eb37ee612f852df422ff1d4fc3 SHA-256: ff754f33b0c3ed093de0e780469e8f25f328da71ae3e75c6c50e9e4f5aacaf55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to external URLs. The presence of embedded URLs and a specific heuristic firing for a 'free generator / game hack' redirector strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and linked content indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/how-do-you-get-roblox-for-free-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/pubg-uc-free-2021_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-without-human-verification-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_004_off00005299.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5299 25740 bytes
SHA-256: 49a30b6f72203cbc0105204b05c28342f882731bc3e08e9f570e6df498697937
font_01_sfnt_off00008d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D66 3992 bytes
SHA-256: ca9cd4f0345d8483bda3e807ea4e40142b8bf70d3672af2d6a5dd7953d1a2391
font_02_sfnt_off00009a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8D 18688 bytes
SHA-256: c319980467b8bcea808cf7446b1cb0422dd1c28f9b99e7a79dce679e259df094

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