Malicious PDF — malware analysis report

Static analysis result for SHA-256 789b6a746183d0df…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 10:23:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7e0833d9056bb5d01588fef1b2738190 SHA-1: 6d14476419ad1e15262c81f1f647b633f59a6734 SHA-256: 789b6a746183d0dfd27113987463567027ff69376c690284bc2b6f3deb850fdc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious URL, which is also present in the document body. The presence of a 'download button' heuristic and the ML classifier flagging the PDF as malicious strongly suggest a malicious intent. The document's content and heuristics indicate a lure for downloading an application, likely a game hack, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/431946152/bloxpink-free-robux-game-hack
    • http://library.umuslim.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://library.umuslim.ac.id/repository/coin-master-free-blogspot_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/monttechscom-coin-master-free-spins_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/avatar-the-last-airbender-roblox_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/roblox-girl_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/hacked-roblox-accounts-list_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • http://library.umuslim.ac.id//repository/pokemon-go-free-games_GM1094591345.pdf
    • http://library.umuslim.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://library.umuslim.ac.id//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/minecraft-aimbot_GM479516143.pdf
    • http://library.umuslim.ac.id/repository/moon-active-games_GM406889139.pdf
    • http://library.umuslim.ac.id/repository/without-human-verification-pubg-uc-hack_GM1330123889.pdf
    • http://library.umuslim.ac.id/repository/minecraft-java-edition-free-download_GM479516143.pdf
    • http://library.umuslim.ac.id//repository/get-free-robux-com_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/huskybuscom-free-robux_GM431946152.pdf
    • http://library.umuslim.ac.id/repository/javascript-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c4.bin
22b03254d7ae801a2a7ae8064fae9b124727909f0f8cde903c2a861e95e05d65		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C4 25500 bytes
font_01_sfnt_off00008cc9.bin
f0f3c8571006a9095d6d00f9e67685b09f8a74260a385ad0d1268a5dc8bbf707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC9 18552 bytes

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