Malicious PDF — malware analysis report

Static analysis result for SHA-256 5997c3488046ac2c…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 17:23:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 41c39d95d2ef60c0c8a7bac042971567 SHA-1: abe5819cd624201d235c0ccacd2522f3d1678391 SHA-256: 5997c3488046ac2c244e7f1e276f991ef3cc8e60eb8c25282aeea6ee4f13b8c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The embedded URL, http://netcdn.tw/app/406889139/coin-master-unlimited-spin-hack-game-hack, is likely used to redirect users to a malicious site. The document body and other URLs reinforce the theme of game cheats and hacks, suggesting a social engineering tactic to entice clicks.

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-unlimited-spin-hack-game-hack PDF link annotation
    • https://www.repository.ptiq.ac.id/repository/how-do-u-get-free-robux-witout-payig_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-synapses-free-trial_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-grab-knife-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/fly-hack-roblox-lumber-tycoon-2-francais_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-roblox-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/robux-hack-meme_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/female-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-roblox-hacks-for-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-bubble-gum-simulator-cheats_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-speed-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/get-infinite-money-roblox-online-money-hack-script_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/master-coin-free-spin_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_off00002ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF4 22912 bytes
SHA-256: b350a4fcae0539185189bfb13f2a80b6dba3dd128a2de64a10a0377256f89c6c
font_01_sfnt_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 18876 bytes
SHA-256: 358dc4db68bada18430270b8c441743941245708799d83374dd1d97c12f95da1

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