Malicious PDF — malware analysis report

Static analysis result for SHA-256 d450717e39bd3736…

MALICIOUS

PDF

35.4 KB Created: 2021-05-22 04:05:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a8837f701be15ea4244ee37014d47460 SHA-1: a03482d7b211d2d02b28cbb1613ca976b48e5989 SHA-256: d450717e39bd3736b1fc15ace38e25e3a70bdeb4a992ac7f3c5553a2d4a3cc30
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and text lures related to obtaining free in-game items, such as Minecraft skins or Robux. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the document structure and embedded links indicate a phishing or scam attempt designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/479516143/how-to-get-free-skins-in-minecraft-game-hack
    • https://elearning.min2kotamalang.education/__statics/gudangsoal/files/robux-apk_GM431946152.pdf
    • https://elearning.min2kotamalang.education/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdf
    • https://elearning.min2kotamalang.education/__statics/gudangsoal/files/can-you-really-hack-coin-master_GM406889139.pdf
    • https://elearning.min2kotamalang.education/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://elearning.min2kotamalang.education/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031c3.bin
c42e28dd8163265a0b2091205f9113969192fe11c370e8a6619c0699d8ef3f6d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C3 24816 bytes
font_01_sfnt_off000069d4.bin
6cc59c28d5557832b1af72f7b0f143d8adff3a85e9aacd177c0586c4e7a11f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D4 18044 bytes

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