Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b5aa0a75d405cd6…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 18:08:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 19c50b5905ba5992bc853b1c03a4b636 SHA-1: 6b5cc20a9d3b9b72af2064f9329068472a9dadf2 SHA-256: 9b5aa0a75d405cd689e266251709bf5b006ac1e3dd8b442af41e1cae7e97f851
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are hosted on domains related to game hacking and free virtual currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to redirect users to potentially harmful sites. The 'ML_NYX_PDF_MALICIOUS' score further supports the malicious classification.

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/how-to-get-free-robux-no-buying-game-hack
    • http://perpus.polimarim.online/repository/roblox-hacking-jailbreak-unlimited-money-omg_GM431946152.pdf
    • http://perpus.polimarim.online/repository/free-robux-2021-november_GM431946152.pdf
    • http://perpus.polimarim.online/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdf
    • http://perpus.polimarim.online/repository/tryrbx-site-free-robux_GM431946152.pdf
    • http://perpus.polimarim.online/repository/hackear-coin-master-sin-verificacion_GM406889139.pdf
    • http://perpus.polimarim.online/repository/how-to-get-real-robux_GM431946152.pdf
    • http://perpus.polimarim.online/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://perpus.polimarim.online/repository/free-robux-generator-2021_GM431946152.pdf
    • http://perpus.polimarim.online/repository/how-do-u-hack-roblox_GM431946152.pdf
    • http://perpus.polimarim.online/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdf
    • http://perpus.polimarim.online/repository/roblox-big-brother-cheats_GM431946152.pdf
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-on-huawei_GM431946152.pdf
    • http://perpus.polimarim.online/repository/free-resources-roblox_GM431946152.pdf
    • http://perpus.polimarim.online/repository/instant-robux-free_GM431946152.pdf
    • http://perpus.polimarim.online/repository/get-free-robux-without-doing-anything_GM431946152.pdf
    • http://perpus.polimarim.online/repository/how-to-hack-coin-master_GM406889139.pdf
    • http://perpus.polimarim.online/repository/robux-free-robux_GM431946152.pdf
    • http://perpus.polimarim.online/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdf
    • http://perpus.polimarim.online/repository/free-robux-codes-no-verification_GM431946152.pdf
    • http://perpus.polimarim.online/repository/roblox-dragon-ball-z-final-stand-zeni-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003146.bin
3c4a1d78867ad5ad011e4c79b1b85254d97b735c73bd0d6a6d7e8f669df3e085
pdf-font-stream PDF embedded font (sfnt) at offset 0x3146 22320 bytes
font_01_sfnt_off00006308.bin
36e0ce8206eb761f2a78c3fb335512f7882b01941712de706ed6ac6f7a9fea81
pdf-font-stream PDF embedded font (sfnt) at offset 0x6308 19284 bytes