Malicious PDF — malware analysis report

Static analysis result for SHA-256 32622343cb47eeab…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 14:15:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 3669533d2b49674bbf12149ca5bf9035 SHA-1: b3030f1e61262f1465143f003c51e4249603319c SHA-256: 32622343cb47eeab68702fa108eb8eb2f35006f82f7340ce0fe01fe423cd1149
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency, such as 'free-coin-master-spins-2021-game-hack'. The heuristic firings confirm that the PDF links to external URIs and uses a game hack redirector lure. The ML classifier strongly indicates maliciousness. The primary attack pattern involves tricking the user into visiting a malicious URL, likely for credential harvesting or further malware delivery.

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/free-coin-master-spins-2021-game-hack PDF link annotation
    • http://lib.mbp.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-dominus-roblox-real_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/hack-facile-sur-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_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_off00002ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED8 22616 bytes
SHA-256: 5cdf563b92d7eec4243983ae6c0e50d126a9ea0dd2589ca0762382249bb0c14c
font_01_sfnt_off00006147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 18576 bytes
SHA-256: b91ca07aeadef02c4833a5be8b217bc3af90c6c550000b8c217b6d13a7f4cb5d

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