Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bae660b3b5c70d9…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 17:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d03d09c89b1de79dd54b54a8d12ce685 SHA-1: eff2635f4f27061b64885b0144cb2565ce9fb17c SHA-256: 7bae660b3b5c70d907fe5bb9deb8ba5e5f5ff88da3dffe48648bf3ac274b4159
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages offering game cheats and hacks. The ML classifier also flagged this PDF as malicious. The primary goal appears to be directing users to download potentially harmful files disguised as game-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/free-modded-minecraft-server-game-hack
    • http://sttlets.education/senayan/repository/instaler-un-cheat-pour-roblox-phamtom-forces_GM431946152.pdf
    • http://sttlets.education/senayan/repository/cheat-for-tickets-on-roblox_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-booga-booga-noob-vs-pro-vs-hacker_GM431946152.pdf
    • http://sttlets.education/senayan/repository/aimbot-hack-roblox-counter-blox_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-robux-games_GM431946152.pdf
    • http://sttlets.education/senayan//repository/minecraft-gun-mod-download-free_GM479516143.pdf
    • http://sttlets.education/senayan/repository/roblox-hack-how-to-get-someones-password_GM431946152.pdf
    • http://sttlets.education/senayan//repository/play-games-for-robux_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-robux-using-codes_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-robux-no-verification-required_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-robux-hack-2021-lenovo_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-get-free-stuff-in-roblox-on-phone_GM431946152.pdf
    • http://sttlets.education/senayan/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://sttlets.education/senayan//repository/coin-master-how-to-get-free-pet-food_GM406889139.pdf
    • http://sttlets.education/senayan/repository/how-do-i-log-into-my-hacked-account-on-roblox_GM431946152.pdf
    • http://sttlets.education/senayan/repository/roblox-mobile-hack_GM431946152.pdf
    • http://sttlets.education/senayan/repository/speed-hack-cheat-engine-roblox_GM431946152.pdf
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-on-2021_GM431946152.pdf
    • http://sttlets.education/senayan/repository/coin-master-hacks-for-free-spins_GM406889139.pdf
    • http://sttlets.education/senayan/repository/how-to-get-free-robux-on-mac_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003557.bin
67a7af1941dce61da0e239a1df01850819591c55a186c087d31b98897d8c330f
pdf-font-stream PDF embedded font (sfnt) at offset 0x3557 22280 bytes
font_01_sfnt_off0000668f.bin
c44f5995e1a698afb30ee04b8d335bc8d1a723b5683d31903f3ca0c4c9b26917
pdf-font-stream PDF embedded font (sfnt) at offset 0x668F 18284 bytes