Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c47b09aaf6f8e0…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 20:25:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4df41594ce70cac126acf76641a108f SHA-1: 3b7a89fcf44f524778a88895d50f5c52ac64d29f SHA-256: 95c47b09aaf6f8e000fb5888a278d25b47a7c69490576f9bceb9ddad1ae5ca45
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm, embedding numerous URLs that masquerade as download links for popular games and in-game currency. The ML classifier and the presence of a large number of external links strongly suggest malicious intent, likely to direct users to sites hosting malware or scams. No scripts were extracted, but the document body and heuristics indicate a lure for potentially unwanted content.

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-pocket-edition-mods-for-free-game-hack
    • http://libsmpn1balongpo.sch.id//repository/play-coin-master-online-free_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/robux-hack-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-free-robux-for-free-in-2-mins_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/best-free-spins-for-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id//repository/lazyblocks-com-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/i-will-give-you-free-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-cheat-codes-iphone_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/free-spins-on-coin-master-generator_GM406889139.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-do-you-get-a-lot-of-robux-for-free_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/roblox-hack-generate-99-999-robux_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id//repository/toolbox-for-minecraft_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-people-on-roblox_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-robux-for-free-2021-easy_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/free-robux-come_GM431946152.pdf
    • http://libsmpn1balongpo.sch.id/repository/minecraft-free-download-apk-softonic_GM479516143.pdf
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-roebucks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003306.bin
c41586fadf2ba95f2bd973910c39e0f1b90765c55ee755aa7042eb1e40863093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3306 21968 bytes
font_01_sfnt_off0000631f.bin
f53502fd8dfdcb0e81f477cb61e2d3dd88ec9f063b8f20d7f418ef222ebf3320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x631F 18496 bytes

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