Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7d94bf8132c6cc…

MALICIOUS

PDF

33.9 KB Created: 2021-07-07 22:14:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aea32ebd8cd1db0b40413b1343b5554b SHA-1: 17d15f2827257031ee4d39b12a839d5c43e07fd6 SHA-256: cf7d94bf8132c6cce17a27c8d8322ae5bc47b428dee6388c9a4f6b3d595ceee1
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are related to game cheats and hacks for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users with deceptive content. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is intended to lead users to potentially harmful sites.

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/431946152/instantrobux-game-hack
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/hack-coin-pro-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-roblox-accounts_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/oginject-co_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-do-you-get-minecraft-for-free_GM479516143.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-hack-coin-master-game-without-verification_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-70-spin-link-today_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-use-inspect-element-to-get-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/websites-that-give-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/link-for-free-spins-on-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coinmasterdailyfreespins-com_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-robux-easy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef9.bin
a246de8d3f9bdf53c0eb89947339a8f701cc402cb23bbffc1e426a79cafc5aa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF9 22156 bytes
font_01_sfnt_off0000602f.bin
5a13a4ba7d4aa3ba564163d7fd1f4e40de414e0c8b16d10ac9018e4301010f0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 18656 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.