Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d475d7bf2a4ed63…

MALICIOUS

PDF

53.0 KB Created: 2021-06-09 08:28:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e03442916e47f7bdc783ed154d568bd7 SHA-1: 6ad6e4eaa03814ecfb552fa140ac56bd71f23727 SHA-256: 1d475d7bf2a4ed6349c5652702fa2e7b4f1b83aedb39524624dc9d9e50658685
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and heuristics indicating it is malicious. The document body, though heavily obfuscated, suggests a lure related to game cheats or hacks, specifically mentioning 'Como Volar En Roblox Hack'. The presence of external URI and ML classifier firings strongly suggest malicious intent, likely to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

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.tw/app/431946152/como-volar-en-roblox-hack-game-hack
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/coin-master-update-2021_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/how-to-get-roebucks-on-roblox_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/earn-robux-today_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/minecraft-games-free-download_GM479516143.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/robux-cheat_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/descargar-hack-coin-master_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/7-year-old-roblox_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-blogspot_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/free-robux-websites-that-work_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/roblox-re_GM431946152.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/minecraft-hacks-xbox-one_GM479516143.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-hack_GM479516143.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/free-daily-spin-coin-master-game_GM406889139.pdf
    • https://elearning.mtsn4jembrana.sch.id/__statics/gudangsoal/files/coin-master-free-box_GM406889139.pdf
    • https://direct-link.net
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005454.bin
5e38be66006fc1710603bd01650e85bc4bd63b12c5fbdab028695dcadd807028		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5454 32744 bytes
font_01_sfnt_off00009f6a.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F6A 3884 bytes
font_02_sfnt_off0000ac12.bin
03b42acac7b921b75e90e58b30bc87b43e2b872b03e0ff465a4a50d39d86874b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC12 18576 bytes

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