Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db10ff3bd99f9af…

MALICIOUS

PDF

36.6 KB Created: 2021-07-06 07:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64736fc3b0f9af8314af4ad04902344c SHA-1: 5fb7753978f7308beaa468b9d54bcd3f0917d1c2 SHA-256: 9db10ff3bd99f9af35ccdc5d4cbc36ae25de501f2acbe82666b1049ffd372f61
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a link farm, strongly suggesting a phishing or scam attempt. The document body and extracted URLs promote 'robux generators' and game hacks, indicating a lure for users seeking unauthorized in-game advantages. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/robux-generator-no-human-verification-2021-game-hack
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/pubg-uc-nasl-alnr_GM1330123889.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-roblox-exploit-spyro_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/get-robux-paid-access-games-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/download-hacked-games-com-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-army-base-roblox_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/pokemon-go-free-lures_GM1094591345.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/pokemon-go-free-download-game_GM1094591345.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-free-coins-and-spins_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/tower-of-hell-roblox-hack_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/hack-on-roblox-to-get-funds-2021_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/roblox-studio-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-do-you-change-your-username-on-roblox-for-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/collect-free-spins-for-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/is-coin-master-hacks-safe_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/delete-tool-lua-roblox-hack-script-pastebin_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/roblox-free-skin_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-can-i-get-free-robux-in-roblox_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/rxgate-cf-free-robux-code_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-toget-free-robux-yt_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034e2.bin
1bdeec9466be38391f13e27ae06a4a3ab20f72f82875eeda488d2f3643e11900		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34E2 23024 bytes
font_01_sfnt_off0000685d.bin
5abbd4c210824a7a1ff79971cc18208e5dacb0982a65bcd012ada1701e003c65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685D 19572 bytes

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