Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d0aba31546c593…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 18:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 67d8f9e0ac294f9aec908ff84418f263 SHA-1: 110450a648b103106fc851ca1b953c9576d1dc4f SHA-256: f2d0aba31546c5937aba25dec05cfc2d11ef469fa3f7d03ff1cf7ac6cf5ce327
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which are SEO-optimized and point to sites offering in-game cheats and currency. The primary URL, http://netcdn.tw/app/406889139/free-coin-master-link-2021-game-hack, suggests a lure for game-related exploits. The heuristic PDF_SEO_LINK_FARM indicates a deliberate attempt to create a link farm, a common tactic for distributing malware or leading users to phishing pages. No scripts were extracted, but the document's structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful websites.

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/406889139/free-coin-master-link-2021-game-hack
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-on-phone_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-spins-on-coin-masters_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-you-get-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-unlimited-spin-hack_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/hack-coin-master-android-2021_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-spin-daily-bonus_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-minecraft-servers-to-join_GM479516143.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/minecraft-rtx-download-free_GM479516143.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-link_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/legit-free-spins-coin-master_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-roblox-accounts-with-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/promo-codes-for-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-gift-card-codes_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/roblox-prison-life-hack_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-free-robux-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033cf.bin
acffa105253812e5914e4538cea3c35ff57d2a5269e1833a88edc5c996355889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33CF 22168 bytes
font_01_sfnt_off000064e2.bin
e88b6940b40ea5040f81da917e0c9c8aa36dd3f4bad0e71faf6aa4f6d6035265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 18568 bytes

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