Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d9a9a3f841d4fe…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 09:34:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c6580437e92fb02141c36f7619d79729 SHA-1: cfd0579ebc3f93d318a79ff19360a5a1ae7d0685 SHA-256: f7d9a9a3f841d4fe913e5420b654dac8dd447063fe09cfba3abd9538b7f9daf4
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes downloading cheat programs and generators for games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for game cheats or hacks. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is intended to deliver unwanted or malicious software.

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/roblox-cheat-program-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/free-roblox-account-generatorold-account_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cheat-codes-for-skywars-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-call-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/ben-10-universal-showdown-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 21388 bytes
SHA-256: d4c1bb491fccfb1faab50cb8fba604bcb3c9bd9d22befef6c112657045d34aa8
font_01_sfnt_off00005e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E24 19168 bytes
SHA-256: f9f6a48e23eaac40556014c3a5c73917c46d615f0aaf102be0da68f6e5776ddc

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