Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e719cf7abdfb60d…

MALICIOUS

PDF

48.4 KB Created: 2021-06-02 18:28:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f2a4988dee63ddfba63dd00f89167e6e SHA-1: 48864f7a4345afa86d933f148052ee0c0407629a SHA-256: 3e719cf7abdfb60d27cce1f942b7b5d968867b839a8cc9763db3cbcd933565c8
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 0.9796

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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-account-2021-zero-game-hack PDF link annotation
    • https://isaf.co.za/wp-content/uploads/fsqm-files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-free-draw-2-hack_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-phantom-forces-rank-hack_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-athoi-admin-hack_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux-and-obc_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/how-to-get-clothes-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-piano-gui-hack_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-zombie-rush-level-hack_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/roblox-one-piece-golden-age-cheat-engine_GM431946152.pdfIn PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000515e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515E 25844 bytes
SHA-256: 20aa0dfea3edfab83100e02982363e6c9a740c076d88c46005ee284ffa9a757c
font_01_sfnt_off00008ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDC 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off0000977c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977C 19084 bytes
SHA-256: dfafd48541c509ae8fb7a396529ce6c93bfa9c2492dce4a21f4be610f52aaef0

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