Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4262b4ea658ee65…

MALICIOUS

PDF

33.1 KB Created: 2021-06-26 15:47:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ae86fa16a28a70d6d65c4aa7b7a8d223 SHA-1: 4c199bb37fef2eb77700fbbb28a06b6899ccbb27 SHA-256: a4262b4ea658ee65f440aa270b57d813b0f9d224be46b90218e5cb449923e19c
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 0.9824

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.co/app/431946152/free-robux-legit-no-scam-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-shader_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-coding-classes-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-zone-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-doge-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-horror-games-multiplayer-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/zephplayz-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-doungnquest-legandary-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/descargar-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_off00002a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2F 22388 bytes
SHA-256: acde84d5069492aef62d5128b15ed27b23e550fd6bd3408d5da16e2eb054420f
font_01_sfnt_off00005c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A 19200 bytes
SHA-256: 8d698877ee976272de91b0970c5e69d3141cdbc05682e3175361178c524ef3f2

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