Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a7008a33ee16ac…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 11:13:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d881f70157582113943c9fd6e922bb0f SHA-1: 5de3d41ae7f32d92061a623fb27f6a26330fcbb2 SHA-256: 36a7008a33ee16ac50017fa458ae2ac192a4ba7ca313d1ac9e97b488e83b1082
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/how-to-get-free-robux-without-verification-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/how-to-get-robux-for-free-grantz_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-card-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-hack-site-simplesite_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-actual-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-booga-booga-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/real-roblox-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-hacks-wurst_GM479516143.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/roblox-mad-city-hack-money_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-daily-free-spins-link-today_GM406889139.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_off00003220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3220 21836 bytes
SHA-256: df6d7567a51659063debefb9c80f0806ffe4170499f7ab9448cab2442f123c2b
font_01_sfnt_off00006233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 19604 bytes
SHA-256: 58b409e880d8c8c8f611c8851265b785a46b2984af904f55916f4ac6f211fe18

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