Malicious PDF — malware analysis report

Static analysis result for SHA-256 95507736ec3c0f23…

MALICIOUS

PDF

41.3 KB Created: 2021-05-14 02:01:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 90dcdd9907419787bbe54935580c13d1 SHA-1: 096979cf58fd7f730b7d4904718f9ae0af3aa0c8 SHA-256: 95507736ec3c0f2329abd9cdcb52f1ee3927cb5d51509c2394a6bff7614bd798
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document contains a lure for 'Coin Master Free Spins' and requests sensitive information like private keys, indicating a phishing or credential harvesting attempt. It embeds external URLs pointing to sites offering game hacks and cheats, which are often used to distribute malware. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a high-risk attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-free-spins-save-game-hack
    • http://evro-okna.net/images/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://evro-okna.net/images/coin-master-mod-version-free-download-34-4_GM406889139.pdf
    • http://evro-okna.net/images/hack-coin-master-without-human-verification_GM406889139.pdf
    • http://evro-okna.net/images/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://evro-okna.net/images/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://evro-okna.net/images/free-robux-glitch_GM431946152.pdf
    • http://evro-okna.net/images/working-coin-master-hack-2021_GM406889139.pdf
    • http://evro-okna.net/images/how-do-you-download-minecraft-for-free_GM479516143.pdf
    • http://evro-okna.net/images/roblox-hack-app_GM431946152.pdf
    • http://evro-okna.net/images/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://evro-okna.net/images/earn-points-for-robux_GM431946152.pdf
    • http://evro-okna.net/images/roblox-arsenal-hack_GM431946152.pdf
    • http://evro-okna.net/images/coin-master-hack-without-verification-ios_GM406889139.pdf
    • http://evro-okna.net/images/100-free-spins-coin-master_GM406889139.pdf
    • http://evro-okna.net/images/coin-master-hack-spins-app_GM406889139.pdf
    • http://evro-okna.net/images/free-minecraft-videos_GM479516143.pdf
    • http://evro-okna.net/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdf
    • http://evro-okna.net/images/coin-master-free-spins-link-today-ios_GM406889139.pdf
    • http://evro-okna.net/images/get-free-robux-info_GM431946152.pdf
    • http://evro-okna.net/images/free-robux-generator-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046fb.bin
1236b61a5861dedfbdf092b09c4da472e0eb6a6177fcc222f59fbb48144d1062		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46FB 25032 bytes
font_01_sfnt_off00007fc0.bin
15196760a456ceed464ee2468def3f91d90090408435a376e50e8e29bc25aeef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC0 18000 bytes

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