Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd78e994147a2e3…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 16:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 45f790ca15916e36aa825624ea17fcf5 SHA-1: a5c0e55964a4f2291db53d1e3c45ca6f0e75073d SHA-256: 4fd78e994147a2e362fd5c3ab6ef083d228cddbe0b820183256827cd49734d5d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and extracted URLs strongly suggest a lure for free game currency or hacks, a common phishing tactic. The ML classifier also flagged this PDF as malicious with high confidence. The presence of embedded URLs indicates an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-just-enter-username-game-hack
    • http://ag-metal.fr/images/can-i-play-minecraft-for-free_GM479516143.pdf
    • http://ag-metal.fr/images/coin-master-free-coins-2021_GM406889139.pdf
    • http://ag-metal.fr/images/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://ag-metal.fr/images/free-robux-without-human-verification-real_GM431946152.pdf
    • http://ag-metal.fr/images/free-spins-coin-master-march-2021_GM406889139.pdf
    • http://ag-metal.fr/images/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://ag-metal.fr/images/114-hacks_GM479516143.pdf
    • http://ag-metal.fr/images/op-rewards-robux_GM431946152.pdf
    • http://ag-metal.fr/images/robux-hack-no-verification_GM431946152.pdf
    • http://ag-metal.fr/images/robux-hack-2021_GM431946152.pdf
    • http://ag-metal.fr/images/coin-master-tiradas-gratis-2021_GM406889139.pdf
    • http://ag-metal.fr/images/coin-master-hack-2021-without-human-verification_GM406889139.pdf
    • http://ag-metal.fr/images/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://ag-metal.fr/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://ag-metal.fr/images/blox-land-free-robux_GM431946152.pdf
    • http://ag-metal.fr/images/how-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://ag-metal.fr/images/minecraft-free-app_GM479516143.pdf
    • http://ag-metal.fr/images/free-robux-no-download_GM431946152.pdf
    • http://ag-metal.fr/images/how-to-hack-coin-master-ios-2021_GM406889139.pdf
    • http://ag-metal.fr/images/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b4f.bin
4b8b524fe134373a5b3ea7968f036a5fe9ae69e20e95456acd0305a8e1c5aaeb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4F 24900 bytes
font_01_sfnt_off000084ce.bin
ad194f5984d8cbd7c817d1b512f86f024f40bf30beebdf7d12c6ff62fc849400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 18960 bytes

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