Malicious PDF — malware analysis report

Static analysis result for SHA-256 163e06fb6d842594…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 08:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e688b6b74ccb08c7e638e7007b917ff8 SHA-1: 9166f2087a886c06174df7cad528cf182c2539f7 SHA-256: 163e06fb6d8425940ae64f74d4d44df0b83323ed8caef93ca3811f75aaae53f9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links and text lures related to obtaining free Robux and game hacks. The heuristic findings indicate a PDF link farm and a high ML classification score, suggesting malicious intent. The document body and extracted URLs point towards a scam designed to redirect users to potentially malicious websites for illegitimate in-game currency or exploits.

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/how-to-get-free-robux-on-pc-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-games-without-signing-in_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-robux-for-free-working-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-without-verification-or-survey_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-pets_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-1-million-robux-for-free-really-easy_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-booga-booga-instant-kill-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/haw-to-get-robux-in-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/hacks-para-cb-ro-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-gift-card-codes-reddit_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/can-you-cheat-in-roblox-flee-the-facility_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/daily-spins-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/pokemon-go-update-free-download_GM1094591345.pdf
    • http://perpus.poltekeskupang.ac.id/repository/space-frontier-beta-release-hack-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-2021-irobux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hacks-for-cards_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/one-by-one-by-one-in-april-fools-roblox-hacking_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-giveaway-discord_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e4a.bin
a2422c981cbc7a764cf34822eee9cd0615678e2250a51d53910d22f7cbad3d11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4A 22340 bytes
font_01_sfnt_off00005f7f.bin
aef8c40112b84489b97b1b1a2bbf6c88e9b8fe4bc85a356f803a45374dab5087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 19136 bytes

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