PDF malware analysis — malicious · 31d2b2e2bfa3503d

MALICIOUS

PDF

44.4 KB Created: 2021-06-10 15:17:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 537190a5abb8f0eacfda40311048629f SHA-1: 143310b077d559bdacc8ba4406f6f50a0828a749 SHA-256: 31d2b2e2bfa3503d49ca342f8b18f5432ab28c3c552089b521445c47c2424dd6

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains a critical heuristic for requesting recovery secrets or private keys, combined with embedded URLs pointing to game-related cheats and codes. This suggests a phishing or social engineering attack aimed at tricking users into revealing sensitive information or downloading potentially malicious files disguised as game aids. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/cheats-and-codes-for-roblox-on-pc-game-hack
- http://perpus.masda.ac.id//repository/coin-master-cheats-free_GM406889139.pdf
- http://perpus.masda.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdf
- http://perpus.masda.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdf
- http://perpus.masda.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://perpus.masda.ac.id//repository/coin-master-hack-quora_GM406889139.pdf
- http://perpus.masda.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdf
- http://perpus.masda.ac.id//repository/free-spins-on-coin-master-app_GM406889139.pdf
- http://perpus.masda.ac.id/repository/minecraft-handbook_GM479516143.pdf
- http://perpus.masda.ac.id//repository/coin-master-free-daily-spins_GM406889139.pdf
- http://perpus.masda.ac.id//repository/free-spins-for-coin-master_GM406889139.pdf
- http://perpus.masda.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdf
- http://perpus.masda.ac.id/repository/tiktok-free-view-pro-app-download_GM835599320.pdf
- http://perpus.masda.ac.id/repository/clean-master-hack-coins_GM406889139.pdf
- http://perpus.masda.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdf
- http://perpus.masda.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdf
- http://perpus.masda.ac.id//repository/coin-master-70-spin-link-2021_GM406889139.pdf
- http://perpus.masda.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
- http://perpus.masda.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdf
- http://perpus.masda.ac.id/repository/blogspot-coin-master_GM406889139.pdf
- http://perpus.masda.ac.id/repository/tiktok-free-followers-generator_GM835599320.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004ee4.bin` `c78074c9bbaae23c6d36d00a13ed6009b6ac19d184744158f2df56401ec844ad`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4EE4	25596 bytes
`font_01_sfnt_off00008978.bin` `a5e84ef6ecc2b04e202ce6b5a6a5c8cf43e6e1c011a84446bf01571444b50d00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8978	18776 bytes

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