Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffffa2caca04b207…

MALICIOUS

PDF

47.2 KB Created: 2021-05-13 16:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 01ef7dfdf55b42fe0f6323f0810cea72 SHA-1: 497a8472cab7d2d96b14c76e3181ba614ccdd582 SHA-256: ffffa2caca04b2076a70ca88f2fa2c4acd9553934f0be9d5e1845e49c03e4805
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and text that lure the user into downloading a game hack or cheat application. The presence of multiple URLs pointing to similar content, combined with the ML classifier flagging the PDF as malicious, indicates a high likelihood of this document being used to distribute malware. The heuristic for a password-protected archive lure suggests that the downloaded content may be further obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/mistplay-robux-game-hack
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-apk_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/robux-claimer_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-iphone_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/hacks-for-coin-master_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-twitter-free-spins_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-free-download-unblocked_GM479516143.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/rblx-gg-free-robux_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-link-today_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-gun-games-free_GM479516143.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/what-is-wurst_GM479516143.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/flip-master-coins-hack_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code-2021_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d92.bin
23458e8a174dfaf674d22c9936a8e32176f932887cf3629baae29a89ce9fb745		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D92 25916 bytes
font_01_sfnt_off00008762.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8762 5596 bytes
font_02_sfnt_off0000940a.bin
4353d9d8b624be656c092b8c8f3622dfb05908b0fd9cf93c1f73531fdc9e42e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940A 18928 bytes

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