Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3d124877e4d313…

MALICIOUS

PDF

34.4 KB Created: 2021-06-17 16:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a242e056ff264e24036afdc4ef793440 SHA-1: 694adc98bcd9194e95ee3a69e61ca9d25beb5e02 SHA-256: 7d3d124877e4d3130f627d9936af137c68d86171516c8409d84483392d6e33de
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes free gift cards and game hacks, indicating a phishing or scam attempt. The heuristic findings confirm the presence of a link farm and external URIs, strongly suggesting the document is designed to redirect users to malicious websites. No scripts were extracted from this sample.

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.co/app/431946152/free-gift-cards-for-robux-game-hack
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/master-game_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/hack-roblox-downla_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/is-pubg-uc-hack-possible_GM1330123889.pdf
    • http://library.ft.upnvj.ac.id/repository/game-guardian-roblox-hack_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/toolbox-mod_GM479516143.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/roblox-hack-game_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/how-to-get-robux-money-for-free_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/pastebin-roblox-free-robux-2021_GM431946152.pdf
    • http://library.ft.upnvj.ac.id/repository/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003014.bin
f3f61067b699964440d5d4d24ab7cd8dc4efbbfc3e101b7d4694f000451d142e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3014 22304 bytes
font_01_sfnt_off000061b1.bin
e5ea4af82afcd1f6194ac650eaa46494db471e3ec81312016aa7f03b50a7d99c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B1 18928 bytes

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