Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9ac9eda34d3b0c…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 21:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8e088b590a23ab89cdb59b1ecf6060a5 SHA-1: 52c09593d890f313a80eece160241df94e1dcd30 SHA-256: 2e9ac9eda34d3b0cd5d3b6278f3dd2662efc6c64d52c818898b068ed61e41bcb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, forming a link farm designed to redirect users to pages offering "hacks" for games like Coin Master and Roblox. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure reinforces the deceptive nature of the document. The primary intent appears to be to trick users into downloading further malicious content or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coinmaster-free-cards-game-hack
    • http://jenne-technik.de/images/jailbreak-roblox-hack_GM431946152.pdf
    • http://jenne-technik.de/images/coin-master-free-spins-link-download-apk_GM406889139.pdf
    • http://jenne-technik.de/images/gamehunters-club-coin-master_GM406889139.pdf
    • http://jenne-technik.de/images/coin-master-daily-link_GM406889139.pdf
    • http://jenne-technik.de/images/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://jenne-technik.de/images/100-free-coin-master-spins_GM406889139.pdf
    • http://jenne-technik.de/images/how-to-hack-roblox-passwords_GM431946152.pdf
    • http://jenne-technik.de/images/clean-master-free-coins-and-spins_GM406889139.pdf
    • http://jenne-technik.de/images/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://jenne-technik.de/images/free-links-coin-master_GM406889139.pdf
    • http://jenne-technik.de/images/free-spin-link-coin-master-today_GM406889139.pdf
    • http://jenne-technik.de/images/robux-hack-generator_GM431946152.pdf
    • http://jenne-technik.de/images/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://jenne-technik.de/images/free-role-in-coin-master_GM406889139.pdf
    • http://jenne-technik.de/images/free-spin-and-coin-blogspot-com_GM406889139.pdf
    • http://jenne-technik.de/images/free-promo-codes-for-robux_GM431946152.pdf
    • http://jenne-technik.de/images/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://jenne-technik.de/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • http://jenne-technik.de/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
    • http://jenne-technik.de/images/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004738.bin
61168d8ccb8de7918b5495788f585afb432500447ce98bc450ed9783ce1814da
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4738 25420 bytes
font_01_sfnt_off00008209.bin
4e9ac2dffccf12dc152d767ce3e4837f7e1c2082475e153b18622bd7e6b7030e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8209 18144 bytes