Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e178de6ebb4edcd…

MALICIOUS

PDF

44.2 KB Created: 2021-06-14 01:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6fbe882e4bb5fc165ed6c271f58984f8 SHA-1: 6631891975d4542654cc5b66f3cad34ee6c03af1 SHA-256: 9e178de6ebb4edcddc9a681becc8d06ba6af34e0c776034c4698b55e66c5b5b8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a primary URL that suggest a lure for downloading game-related hacks or cheats. The heuristic firings indicate a "PDF_SEO_LINK_FARM" and "EMBEDDED_URL", strongly suggesting the document's purpose is to redirect users to external, potentially malicious, content. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/anti-cheat-script-blocker-roblox-game-hack
    • http://www.taxiaparis.fr/images/coin-master-daily-rewards-link_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-hack-on-a-roblox-game_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-roblox-accounts-with-obc-2021_GM431946152.pdf
    • http://www.taxiaparis.fr/images/roblox-free-followers_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-free-coins-link-blogspot_GM406889139.pdf
    • http://www.taxiaparis.fr/images/coin-master-daily-free-spins_GM406889139.pdf
    • http://www.taxiaparis.fr/images/coin-master-hacks_GM406889139.pdf
    • http://www.taxiaparis.fr/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdf
    • http://www.taxiaparis.fr/images/roblox-cheat-money-commands_GM431946152.pdf
    • http://www.taxiaparis.fr/images/how-to-hack-roblox-games_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-hack-with-lucky-patcher_GM406889139.pdf
    • http://www.taxiaparis.fr/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://www.taxiaparis.fr/images/coin-master-free-spins-link-hack_GM406889139.pdf
    • http://www.taxiaparis.fr/images/free-robux-real-working_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-mode-menu-works-roblox_GM431946152.pdf
    • http://www.taxiaparis.fr/images/minecraft-story-mode-free_GM479516143.pdf
    • http://www.taxiaparis.fr/images/free-robux-no-verification-at-all_GM431946152.pdf
    • http://www.taxiaparis.fr/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://www.taxiaparis.fr/images/minecraft-online-free-download_GM479516143.pdf
    • http://www.taxiaparis.fr/images/free-online-roblox-death-games_GM431946152.pdf
    • https://rblx.land
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ba7.bin
c808e2d31d6c6c81e1e704cc7e9dde3c884db5f4789ff9d58b327804e3e040c1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA7 26988 bytes
font_01_sfnt_off0000895c.bin
23050055ca003ef41dd4ff4a09e423e77178ec48df038197438a4f4f94c455ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x895C 18748 bytes