Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff12fa4761633b0…

MALICIOUS

PDF

42.0 KB Created: 2021-04-30 21:20:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8639f3f83997d848459d897eda455c5a SHA-1: 1e539e48dfe50a43479e05e51f7e413a60a2c1e2 SHA-256: 8ff12fa4761633b080bfbd1705d6e996cf5cfba8f85043f2b65b66110d96c85f
82 Risk Score

Malware Insights

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

The PDF document contains a high-confidence ML classification indicating maliciousness and includes a heuristic for disabling security software. It also presents a visual call-to-action button linking to a URL that appears to be related to game hacking. The document body and embedded links suggest a lure to download a malicious payload disguised as a game hack, likely leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/roblox-join-players-that-arent-freind-hack-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/como-se-tiene-el-hack-para-traspasar-paredes-en-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/nre-roblox-adopt-me-hack-script-money-glitch-tizi-artizi.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacking-beyond-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/da-hood-roblox-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-pp-on-the-plaza-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/earn-free-robux-rbxblaster.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-clothes-and-hair-girl.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-card-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-speed-hack-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/boys-roblox-pajamas-free-shipping.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42B8 26640 bytes
SHA-256: 259004e851393745c0eed4fe4dda4f262e25057ee197b37fc051a14852b84e2d
font_01_sfnt_off00007f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4B 19412 bytes
SHA-256: bf06c27d1ae8f2c9cf24dc82b280e4aeff2a98da668faafb9181250d96c4e3c7

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