Malicious PDF — malware analysis report

Static analysis result for SHA-256 329c249ec31795d2…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 07:11:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a2abf63e380a2e4ce7ed0139b51aafa1 SHA-1: 5cfbf55b8a791ce805a710af23909ebbb1bc1a86 SHA-256: 329c249ec31795d21d6c5e3f6deaa8a660f4111b2bcb85d422b5a00ff53a5b90
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a call-to-action phrase, strongly suggesting a lure to download malicious content. The document body and extracted URLs indicate a theme of offering free game-related items, a common social engineering tactic. The presence of a PDF URI heuristic and a large number of external links points to a link farm or downloader pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/free-account-roblox-with-robux-game-hack
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-spin-and-coins-free_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/minecraft-xbox-360-free_GM479516143.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-roblox-adopt-me-pets_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-spin-hack-coin-master-2021_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-100-robux_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-spins-no-verification_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-2021-spin-link-today_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-com-2021_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/minecraft-xbox-free_GM479516143.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-game-packs-for-coin-master_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/minecraft-logo-maker-free_GM479516143.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-do-you-get-free-roblox-money_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/whats-robux_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-game-free-play-online_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/minecraft-wurst-hacked-client_GM479516143.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-fun-hack_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005341.bin
d9b072c3e4f3f990c2760262a35129987d8f54780f36c33f6612d0bdfdfb62b2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5341 25588 bytes
font_01_sfnt_off00008d7d.bin
d4efd49219a7ff6424c923a6ccef5b7e1750ded18bbd79546f2ad196ddc76c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7D 2844 bytes
font_02_sfnt_off0000973d.bin
668999cf9284642de193c24d0ad86807d097fd3a0f3919542938043f8a05e142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x973D 18676 bytes

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