Malicious PDF — malware analysis report

Static analysis result for SHA-256 266ad27e4c6f9694…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 07:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 38272bb33ca13cf31eabb3772287f225 SHA-1: c276c46120b7ef7a978dc336ff29821675f1d9b3 SHA-256: 266ad27e4c6f96948453509492873f34c4d61fa3855606fa9965bc1b70bf5a20
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to websites offering game-related cheats and free virtual currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged this PDF as malicious. The document body, though partially garbled, contains phrases like 'Free Robux Websites That Actually Work' and lists numerous URLs, reinforcing the scam or phishing intent. No scripts were extracted, but the primary attack vector appears to be directing users to malicious websites via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-websites-that-actually-work-game-hack
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-account_GM479516143.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/master-coin-hack_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-free-cards-hack_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/roblox-download-pc-free_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-minecraft-mods-for-xbox-one_GM479516143.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-fan-hack_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android_GM406889139.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/minecraft_GM479516143.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://elearning.manmabar.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c78.bin
0c94f59f8ce40e471f947a5058e45fc223cd557041f18d8b15ec327bd1362797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C78 24628 bytes
font_01_sfnt_off00008508.bin
f49525d2cb353299e95430044cca9c62699809686ebb763340304ea0e82a2cbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8508 19252 bytes

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