Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c43f4a211032f54…

MALICIOUS

PDF

37.0 KB Created: 2021-05-23 01:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a9da6648ee0b68ff715e61213e624b36 SHA-1: 2b35c5f1698e1b4e00e3c097d3056f2e35f631cd SHA-256: 5c43f4a211032f54e54abd4fd6b125a95595bdff336ff6bb1f21957134ef50bf
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and text that lure the user towards downloading a 'Minecraft Hack'. The heuristic 'SE_CLICKFIX' indicates the document likely instructs the user to execute a command, a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/minecraft-hacks-wurst-game-hack
    • http://pwpyemen.org/images/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • http://pwpyemen.org/images/universal-minecraft-converter-free_GM479516143.pdf
    • http://pwpyemen.org/images/minecraft-hacks-115-2_GM479516143.pdf
    • http://pwpyemen.org/images/how-to-buy-robux-for-free_GM431946152.pdf
    • http://pwpyemen.org/images/coin-master-game-hack-apk_GM406889139.pdf
    • https://playhack.in/minecraft
    • https://education.minecraft
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035f7.bin
c3a49e69cea31d28ff0625a5130279ccfa37833c090c5907caccf297bbc1004b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F7 25960 bytes
font_01_sfnt_off00007039.bin
3e7497e6bc4bf84e5186ee2c608eda5b15e7e8e7c6854cdd6eb66a0ec10d8832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7039 18076 bytes

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