Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceca44bb1eaab569…

MALICIOUS

PDF

46.6 KB Created: 2021-05-15 13:33:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 06c655d1c129098c198404c288de540d SHA-1: 5b886b0e48dc60242918aecf02f4c2630d164119 SHA-256: ceca44bb1eaab5698cfc9de19700f0c6533a437ece6c3e4b35987858ab7ab6fa
102 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a heuristic firing for a 'Secret Recovery Lure', indicating it attempts to trick users into providing sensitive information. The document body, though partially corrupted, suggests a lure related to game hacks ('Coin Master', 'Roblox'), which is a common social engineering tactic. The presence of external URIs further supports the malicious intent of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/free-attacks-on-coin-master-game-hack
    • http://diatecgroup.com/images/working-coin-master-hack-2021_GM406889139.pdf
    • http://diatecgroup.com/images/roblox-hack-me-robux_GM431946152.pdf
    • http://diatecgroup.com/images/coin-master-free-spin-links-december-30-2021_GM406889139.pdf
    • http://diatecgroup.com/images/free-robux-meme_GM431946152.pdf
    • http://diatecgroup.com/images/coin-master-hack-without-verification_GM406889139.pdf
    • http://diatecgroup.com/images/free-online-generator-for-coin-master_GM406889139.pdf
    • http://diatecgroup.com/images/coin-master-links-to-free-spins_GM406889139.pdf
    • http://diatecgroup.com/images/hack-coin-master-apk-31_GM406889139.pdf
    • http://diatecgroup.com/images/free-robux-hack-generator_GM431946152.pdf
    • http://diatecgroup.com/images/mobihack-net-roblox-hack_GM431946152.pdf
    • http://diatecgroup.com/images/coin-master-ad_GM406889139.pdf
    • http://diatecgroup.com/images/free-robux-microsoft_GM431946152.pdf
    • http://diatecgroup.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://diatecgroup.com/images/free-coin-master-spins-2021_GM406889139.pdf
    • http://diatecgroup.com/images/how-to-exploit-roblox_GM431946152.pdf
    • http://diatecgroup.com/images/games-in-roblox-that-give-you-robux_GM431946152.pdf
    • http://diatecgroup.com/images/free-spins-for-coin-master-app_GM406889139.pdf
    • http://diatecgroup.com/images/optifine-pe_GM479516143.pdf
    • http://diatecgroup.com/images/free-robux-giveaway-live_GM431946152.pdf
    • http://diatecgroup.com/images/avatar-de-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c68.bin
4e3bd1c31794dd60c8e569adc036cce56c51e7b5ea7a7e946f600de8d94a2d03
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C68 27036 bytes
font_01_sfnt_off00008b64.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B64 2840 bytes
font_02_sfnt_off00009516.bin
29d75bb9bbadf62398e74281051d2631fb9c7658556dc1dc6690862643678cc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9516 17880 bytes