Malicious PDF — malware analysis report

Static analysis result for SHA-256 055bf4f74b4e7d87…

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 22:12:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dec66e09533c56ce4c3d632d9181a899 SHA-1: 5e0b9697fbabf386af1d7a5c68b91a86fa578453 SHA-256: 055bf4f74b4e7d87829398be6303a07b6badbf5873d5e6cc8bceec80207693c6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that link to external sites, many of which are part of a link farm designed to host game hack content. The heuristic firings indicate a high likelihood of malicious intent, with the ML classifier strongly flagging the PDF. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-hack-no-verify-game-hack
    • http://ladagoterie.fr/images/coin-master-game-hack-online_GM406889139.pdf
    • http://ladagoterie.fr/images/free-robux-by-watching-ads_GM431946152.pdf
    • http://ladagoterie.fr/images/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://ladagoterie.fr/images/coin-master-hack-online-pc_GM406889139.pdf
    • http://ladagoterie.fr/images/robux-for-surveys_GM431946152.pdf
    • http://ladagoterie.fr/images/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://ladagoterie.fr/images/coin-master-hack-2021-without-human-verification_GM406889139.pdf
    • http://ladagoterie.fr/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://ladagoterie.fr/images/roblox-ftw_GM431946152.pdf
    • http://ladagoterie.fr/images/free-robux-earn_GM431946152.pdf
    • http://ladagoterie.fr/images/coin-master-free-coins-no-human-verification_GM406889139.pdf
    • http://ladagoterie.fr/images/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • http://ladagoterie.fr/images/minecraft-free-online-unblocked_GM479516143.pdf
    • http://ladagoterie.fr/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://ladagoterie.fr/images/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://ladagoterie.fr/images/coin-master-free-gold-cards-link-2021_GM406889139.pdf
    • http://ladagoterie.fr/images/coin-master-hack-apk-android_GM406889139.pdf
    • http://ladagoterie.fr/images/how-to-get-free-robux-codes_GM431946152.pdf
    • http://ladagoterie.fr/images/roblox-devil_GM431946152.pdf
    • http://ladagoterie.fr/images/coin-master-hacks-for-pet-food_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aa7.bin
babb4ee041dbeece341ee7e6ed303e95bbf060b389a1b43421d7aa6b71c65a20		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA7 25408 bytes
font_01_sfnt_off000085a9.bin
54638c529080804e5acac8de7a55685f76245eef83df4e09abff776108167d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A9 18032 bytes

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