Malicious PDF — malware analysis report

Static analysis result for SHA-256 c817da081eab74bf…

MALICIOUS

PDF

46.9 KB Created: 2021-06-08 23:50:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b1e1f50ae6738030d81381bb8c0f6c73 SHA-1: 8880b43aacc2986670fde161f2729e851d51e712 SHA-256: c817da081eab74bf7fccfc1c31ee33d0505f28f7153316127500b0f4c2e27614
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 0.9832

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.tw/app/431946152/how-to-get-marshmallow-head-in-roblox-2021-fr-free-game-hack PDF link annotation
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/best-cheat-engine-for-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-hack-dll-download_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/free-roblox-rthro_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-medieval-warfare-reforged-hack_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/obby-that-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/gift-card-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-followers-hack_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-city-of-london-money-hack_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/best-free-gear-in-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-get-a-shoulder-pet-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-obbys-that-give-you-free-robux_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
stream_004_off0000524f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524F 27812 bytes
SHA-256: c3cae8ee661807f802a37c23b4242c95599ca99676c47c8e3f709904cad86b36
font_01_sfnt_off000090b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B9 19640 bytes
SHA-256: 388a92a4bed2c445f8337a77b0d8ecc44bf9e3d574fd8f8e0d0622b5d2f1f89b

Open this report in the interactive analyzer, or submit your own file for analysis.