Malicious PDF — malware analysis report

Static analysis result for SHA-256 af68b7314b6bb00d…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 07:52:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ea4bcf197b00d99802f823e1c5b315cf SHA-1: 4ecab59dc05cf3786a929c0b6daa769b6dce010c SHA-256: af68b7314b6bb00d6597e05e6eaa8f5d130c6cf280bf65c8e9a01c3a70ccbe64
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that promise game hacks and generators, such as 'coin-master-2021-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of these lures indicates a likely attempt to redirect users to malicious content or phishing pages. No scripts were extracted, but the document's structure and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful files or visiting compromised sites.

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/coin-master-2021-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/get-unlimited-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-make-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/easy-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-so-sick-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-beetle-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/i-was-hack-on-roblox-no-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/ssuper-speed-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/games-like-roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/overblox-scipt-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/download-roblox-on-computer-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-survey_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_off0000337d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337D 22632 bytes
SHA-256: c672c9708bfb4fa7b3bdd75dfe93006b3ea3b2e320b1a1624aac9c2a62f7f57d
font_01_sfnt_off00006623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6623 18236 bytes
SHA-256: ee20fae09ad4742887cf3ae2f1dc7b8177075f029557999e2b01a65596e64057

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