Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2590f1d960ed0a…

MALICIOUS

PDF

44.2 KB Created: 2021-06-04 03:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f0a328ff7bba98b19eed78064e7ad5c SHA-1: 73ba64fdac774f9486b71e7404520cf1b814e292 SHA-256: 4d2590f1d960ed0a598eeb3f6b3908a414d630cb3f6f6a5f3dd4dc19c90eaebf
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 strongly suggest a lure for downloading game hacks or cheats. The presence of a high-confidence ML classifier firing and multiple external URI findings indicate a malicious intent to redirect users to potentially harmful content. The document also hints at password protection, a common tactic to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-cards-hack-2021-game-hack
    • http://www.library.gkigadingserpong.org/repository/roblox-army-free-robux_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/robux-matchcomfree-robux_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/best-free-roblox-outfits_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-rare-cards-hack_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-spins-2021_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-speed-hack_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/free-spins-for-coin-master-game_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/actual-free-robux_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-password-hacker_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/robux-hacks-2021_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/best-free-spins-link-coin-master_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/free-robux-2021-no-verification_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spin-27_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/get-free-robux-com_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/how-you-get-robux_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/robux-best_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-gold-cards-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000517f.bin
f5755ccd42cf995649f371ce0137984b0e2beec513e70ccf6406d1032f7488ab		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517F 24744 bytes
font_01_sfnt_off000089b6.bin
56ed892f9c960ec28c91726eeb440a92294fcef820bc23b96874e10d7a9d3574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B6 18292 bytes

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