Malicious PDF — malware analysis report

Static analysis result for SHA-256 451901999bfb5d4e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 06:13:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 52a49099bba7546fb3bc98aef89cc50e SHA-1: e88f9ad1b471263a2bc2bcd0d142f4db4a4e49be SHA-256: 451901999bfb5d4e9e194b68dcf8923c58d24f3008c1285ade376e01e3216165
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic firing for a game hack lure, directly linking to a URL that promises free spins for Coin Master. The document body and embedded URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting potentially malicious sites or downloading unwanted software. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/legitimate-coin-master-free-spins-apk-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/lua-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-konsol_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.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
font_00_sfnt_off000031d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D0 23100 bytes
SHA-256: f2e521514047c038443c5819441e303605b8ef3fb6927401e28da06dc7718fe7
font_01_sfnt_off000065b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 18604 bytes
SHA-256: b87cbd5be08026ebd281dd8519d989efc4945d4df70191f854a349f55fed381b

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