Malicious PDF — malware analysis report

Static analysis result for SHA-256 b36f2a871dfe06d6…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 18:30:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6a0b7e6569156197c4d4d7f4fff6d7f2 SHA-1: b06438a6b8483ceb563f6227d3657ff50e594cfc SHA-256: b36f2a871dfe06d66f4f2d73592fcccc758d2e5aeccfbb51e6842e4d2168e5f1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high-confidence heuristic indicating it links to a game hack redirector, specifically for 'Coin Master'. The document body and embedded URLs reinforce this by pointing to similar game hack or cheat-related content. This suggests a social engineering tactic to trick users into downloading potentially malicious executables.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/406889139/coin-master-hack-tool-exe-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/roblox-metal-detector-simulator-infinite-money-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hacker-code-fr-redline_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-menu-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-easy-way-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/tiktok-free-pc-download_GM835599320.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/v3rmillion-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/tiktok-free-view-jio-phone_GM835599320.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_off0000334a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x334A 23468 bytes
SHA-256: b2c30bc7c791543577e55521005967a88f800f3642b7ebd2d58ef04d3fe40bca
font_01_sfnt_off00006884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6884 18288 bytes
SHA-256: e3ee3faaed3fb9d29a0c6b9af349903c436110c53a8ac78f60ee1b5bb16a55c9

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