Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62c019c2c6ad657…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 18:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: abaaf01438b6cdbd67ecf70880d9c179 SHA-1: 02545a63883f81c2c72655298229859fc945ea05 SHA-256: c62c019c2c6ad657adba272733b42b9bc047fd97617ca2ef7badbd718c51d0f8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to sites offering game hacks and cheats, suggesting a lure for potentially unwanted software or scams. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports malicious intent. No scripts were extracted, but the document body and heuristics indicate a phishing or social engineering attempt.

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/479516143/minecraft-115-2-hacks-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-hack-online_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-apk-mod_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-hack-lumber-tycoon-2script-inserter_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/fake-roblox-online-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-on-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-cheats_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/games-on-roblox-that-vip-servers-are-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-promo-code_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-heaven-free-spins-and-coins_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/dinosaur-simulator-roblox-cheats_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/hacking-in-parkour-in-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-mafia-cloth-for-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-glitch-no-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003124.bin
84bde3f6e78773b9512c874c99785cef1f049d0f4e74eca02bb69c5891a5bb10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3124 22256 bytes
font_01_sfnt_off000062ae.bin
a5e8b6de27b32cfbe788615902c7a1c8c983a8dcd969aa9e6686e527b322186c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 18392 bytes

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