Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b461db90037b5e…

MALICIOUS

PDF

48.6 KB Created: 2021-05-13 12:32:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fd0268047630aa3cbfa49c79436e1a85 SHA-1: 1291d9f398f4e1e67699635cbc8013914800ad38 SHA-256: 99b461db90037b5e3bdffbd18fbc15362a5c07a800765247dc3d4396a96b6948
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains an external URI pointing to a site offering free Robux, and numerous other URLs related to game hacks and cheats. The heuristic 'SE_SECURITY_BYPASS' indicates the document may instruct users to disable security software, a common tactic for malware delivery. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

Heuristics 4

  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/how-do-you-get-free-robux-game-hack
    • http://www.pustaka.pn-calang.go.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/50-000-free-spins-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-its-free_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-download-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-pe-hack-client_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-free-hair-codes_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/toolbox-for-minecraft-ios_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-for-kids_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/daily-free-spin-coin-master-link_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-coin-master-spin-app_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-spin-coin-master-game_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-no-verify_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-card-hack_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/como-hackear-coin-master-iphone_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bfb.bin
96334a245c095da4c46096b2b2bc99dac9c23462001bb319317e1feb66fb3858		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFB 30120 bytes
font_01_sfnt_off0000911f.bin
972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714		 pdf-font-stream PDF embedded font (sfnt) at offset 0x911F 2820 bytes
font_02_sfnt_off00009abe.bin
37b0398febc23a1417b5642eaebf6c5e0b941c8fdaeae9a9e3ba89062b3e12f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABE 18612 bytes

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