Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5417a8f636941c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-02 03:14:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bb32642f01d5c5b83e0217ab0fc732b6 SHA-1: 77d2aac92af599b9a8e4e7ff7bf93545f09df6e3 SHA-256: de5417a8f636941cb8a8f795c7459b857111aae044f3a149de27b050f1a3e29d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to pages offering game hacks and free currency for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to drive traffic to potentially malicious sites. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the content strongly suggest a phishing or malware distribution attempt.

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/roblox-tuxedo-free-game-hack
    • https://library.iuli.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdf
    • https://library.iuli.ac.id/repository/free-roblox-exploits-september-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • https://library.iuli.ac.id/repository/play-minecraft-for-free-on-pc_GM479516143.pdf
    • https://library.iuli.ac.id/repository/descargar-roblox-hack-robux-pc_GM431946152.pdf
    • https://library.iuli.ac.id/repository/free-robux-games-that-work-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/how-to-earn-free-robux_GM431946152.pdf
    • https://library.iuli.ac.id/repository/roblox-sand-simulator-infinite-backpack-code-hack-android-no-script_GM431946152.pdf
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-no-inspect-roblox_GM431946152.pdf
    • https://library.iuli.ac.id/repository/quiz-for-free-robux_GM431946152.pdf
    • https://library.iuli.ac.id/repository/como-utilizar-cheat-engine-en-roblox-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdf
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/free-robux-generator-no-download-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • https://library.iuli.ac.id/repository/free-robux-master_GM431946152.pdf
    • https://library.iuli.ac.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • https://library.iuli.ac.id/repository/free-account-roblox-2021_GM431946152.pdf
    • https://library.iuli.ac.id/repository/cheat-roblox-blox-piece_GM431946152.pdf
    • https://library.iuli.ac.id/repository/free-roblox-hakercom_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea9.bin
515f840979427819bfef9f56271ca8729f2942a6279127f550d088edb775c0d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA9 22564 bytes
font_01_sfnt_off0000612f.bin
b6c8698c4868e29f7ab08d72421abfe1f15ea1e5aee5c09c2b07548193622504		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 18964 bytes

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