Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcefa14533d0dc8a…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 11:27:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f4038052d3b2d2d763c0c36bfcde562f SHA-1: 221af683838e27e9c239d55fdd0d8241fd70eabc SHA-256: fcefa14533d0dc8a73b15fe09b679ad24b4fa8b9f305cfe144f0fd82024ad4d5
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to game-related hacks and cheats. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted from this sample, limiting further analysis of its execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/robux-hack-no-human-verification-2021-pc-game-hack
    • http://opac.library.uib.ac.id/repository/coin-master-free-spins-link-today-2021_GM406889139.pdf
    • http://opac.library.uib.ac.id//repository/coin-master-spin-link-2021_GM406889139.pdf
    • http://opac.library.uib.ac.id/repository/roblox-yin-vs-yang-ninja-assassin-hack_GM431946152.pdf
    • http://opac.library.uib.ac.id//repository/hacks-para-roblox_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://opac.library.uib.ac.id//repository/free-minecraft-website_GM479516143.pdf
    • http://opac.library.uib.ac.id/repository/hack-de-roblox-bee-simulator_GM431946152.pdf
    • http://opac.library.uib.ac.id//repository/how-to-coin-master-hack_GM406889139.pdf
    • http://opac.library.uib.ac.id/repository/dl-roblox-hack-scripts-download_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/free-robux-no-hsck_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdf
    • http://opac.library.uib.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://opac.library.uib.ac.id//repository/free-roblox-card_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/roblox-hack-com_GM431946152.pdf
    • http://opac.library.uib.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
    • http://opac.library.uib.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdf
    • http://opac.library.uib.ac.id//repository/free-spin-coin-master-link-download_GM406889139.pdf
    • http://opac.library.uib.ac.id/repository/free-spins-for-coin-master_GM406889139.pdf
    • http://opac.library.uib.ac.id//repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000537a.bin
f8c01595cebd84e2ea64620216b137e654f4145b44ddf27b50d5b620d819b0c7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x537A 24376 bytes
font_01_sfnt_off00008b0e.bin
7a4e47df645c914ccf8ccb9d25b9f5a062ccd6f304458c559df2a2fded97099b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0E 19424 bytes

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