Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1929c4be6cbe76c…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 07:42:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9e72e0bb649c7ed173980c1ecd09a9e0 SHA-1: 11a010f9b61062f857d9698284ee250dc14dd5af SHA-256: d1929c4be6cbe76c31cb9661db30934375fb7f40f39982018614502d129ef6c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free in-game currency and hacks for games like Roblox and Coin Master. The presence of a download button lure and password archive lure suggests an attempt to trick the user into downloading a malicious payload disguised as a cheat or hack. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/robux-no-survey-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/cardcode-pw-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hacked-by-blueroes_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-rescources-no-download-or-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/games-on-roblox-that-give-you-free-stuff_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-skin-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-account-that-has-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-thumbnails-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-any-time_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-do-you-be-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/seashit-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-no-survey-no-download-no-password_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3001 21664 bytes
SHA-256: 9ef6d7c386d76623c86c8b811a41a60e43acfc876dde1c20c91d97d8d8f5ceac
font_01_sfnt_off00005f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9E 18844 bytes
SHA-256: c70c18245f3514fbd0595f07482cf26ba9ec715c6560f691cfe3a4c485707883

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