Malicious PDF — malware analysis report

Static analysis result for SHA-256 397c7ce24512536b…

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 15:06:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2e3a115e63247ad138d8213f047cfda6 SHA-1: 0bb319bd1d5b2fa49b1f2cd4455ef16d5ddb42d6 SHA-256: 397c7ce24512536b53692f1345ecf23d02c00492ab7698adfed73d876a4dd10d
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a call-to-action phrase, strongly suggesting a lure to download further malicious content. The ML classifier also flagged this PDF with high confidence. The document body and extracted URLs indicate a scam related to free in-game currency or hacks, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/free-robux-today-game-hack
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-robux-apk_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/minecraft-java-free-account_GM479516143.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/cool-minecraft-hacks_GM479516143.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/coin-master-free-cards-link-2021-today_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/static-moonactive-net_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/what-do-roblox-points-do_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/roblox-money-hack_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/lots-of-robux_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/completed-coin-master-hack_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/dailyrobux_GM431946152.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/get-free-spins-coin-master_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdf
    • http://www.vvsautomaticdoors.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ce5.bin
280e8e288507816546d41e69f254eea2177591925adac1956a7068265f726674		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CE5 26372 bytes
font_01_sfnt_off00008917.bin
123b3c01001442c78a22a4b95c046930f1463c344676a890e106be4cc216f6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8917 18596 bytes

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