Malicious PDF — malware analysis report

Static analysis result for SHA-256 49bb1a03b318f09d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 23:54:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3d4f90733f45c1602913c2c30a7315eb SHA-1: dbb458b0f686022cf906b2a4f066f5684df1c357 SHA-256: 49bb1a03b318f09d6af8778354bbc630b8afbc901e9a4ead0bdc94011bf680bc
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 0.9980

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.co/app/431946152/how-to-customize-roblox-avatar-for-free-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-gives-mega-glitch-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/como-hackear-a-una-persona-en-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-verifying-anything_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/fearless-cheat-engine-roblox_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_off00002e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E48 22596 bytes
SHA-256: d7626b4c27fb019edbaa4299d1df716712f629dc6c2fffa53884e8bd786d84a7
font_01_sfnt_off000060b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 19632 bytes
SHA-256: c9e5a72d5b43669cf9bbdb7fae4465426c1cb962b1792a05e09167998ff9c28f

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