Malicious PDF — malware analysis report

Static analysis result for SHA-256 585d698fc5445ec2…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 03:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 3c7e57042a39a05f1dda0f5724d03e52 SHA-1: fd8dcdcec3d41d8d04e493a45ec1ee0239c91191 SHA-256: 585d698fc5445ec236f4609b14eecc6c9fdbfffb7db5990b6657e754670599c4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically mentioning 'anti-roblox-speed-hack'. It includes multiple links to external websites, one of which is identified as a redirector for game hacks. The ML classifier also flagged this PDF as malicious. The primary attack pattern observed is the use of a deceptive lure to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/anti-roblox-speed-hack-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/honest-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/androeed-ru-minecraft_GM479516143.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_off000053f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9 25472 bytes
SHA-256: 674092e33d0be0bbf9d27f1c5b82c457065633c36488ff7a7162937e48217692
font_01_sfnt_off00008f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F17 18756 bytes
SHA-256: ab5f07433b299d09c788dd7c326b87965f671e7d62d4a1c9c2ce383da9a6c05a

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