Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8fda1c51e397f25…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 15:56:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aff7995e129d81ea9d0f8fe1e0f18c63 SHA-1: df219d722c806e19e5b9af90eff1efb820d5448a SHA-256: a8fda1c51e397f253c1a6344db51e2dec9a510c615cd78ecd53ee08892518bbb
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which point to game-related hacks and exploits, suggesting a lure for potentially unwanted software or phishing. The presence of a 'download button' heuristic further supports this, indicating a deceptive user interface. The ML classifier strongly flagged this PDF as malicious, reinforcing the assessment of a malicious intent.

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/479516143/free-minecraft-account-game-hack
    • http://archi-z.ru/images/coin-master-hack-software_GM406889139.pdf
    • http://archi-z.ru/images/what-to-do-if-you-hacked-someone-on-roblox_GM431946152.pdf
    • http://archi-z.ru/images/free-robux-legit_GM431946152.pdf
    • http://archi-z.ru/images/hacking-coolrichytimemax-in-roblox-youtube_GM431946152.pdf
    • http://archi-z.ru/images/daily-coin-master-free-link_GM406889139.pdf
    • http://archi-z.ru/images/play-coin-master-online-free_GM406889139.pdf
    • http://archi-z.ru/images/free-stuff-in-roblox-2021_GM431946152.pdf
    • http://archi-z.ru/images/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • http://archi-z.ru/images/game-garudian-hack-roblox_GM431946152.pdf
    • http://archi-z.ru/images/hacks-en-roblox-descargar_GM431946152.pdf
    • http://archi-z.ru/images/coin-master-hack-spin-160-pro_GM406889139.pdf
    • http://archi-z.ru/images/how-to-hack-someone-on-roblox-for-robux_GM431946152.pdf
    • http://archi-z.ru/images/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
    • http://archi-z.ru/images/roblox-20219-robux-free_GM431946152.pdf
    • http://archi-z.ru/images/get-free-spins-coin-master-link_GM406889139.pdf
    • http://archi-z.ru/images/how-to-get-admin-commands-on-roblox-with-cheat-engine_GM431946152.pdf
    • http://archi-z.ru/images/how-many-levels-are-there-in-coin-master_GM406889139.pdf
    • http://archi-z.ru/images/roblox-elemental-battlegrounds-gems-hack_GM431946152.pdf
    • http://archi-z.ru/images/how-to-get-free-robux-ez-ways_GM431946152.pdf
    • http://archi-z.ru/images/diary-of-a-roblox-hacker_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d2.bin
13b4eb3d40852666e7f3d5fe14ed0c4442b72c12fdaa3c500cd0c3241769330c
pdf-font-stream PDF embedded font (sfnt) at offset 0x31D2 22204 bytes
font_01_sfnt_off00006291.bin
bf622982fa8c99a0d325c1609f31225d3bf40058dc9cd86c15c3e8f5bbc20de8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6291 18140 bytes