Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea94adae41e88b1c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 12:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ff12a4f8483ff293ea5bfaab6f6e044d SHA-1: adc21540802d74506dea10f48c59cd284b1b57be SHA-256: ea94adae41e88b1c269208192be100f08b020bc84661039e725d498faa39a060
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a "download" call-to-action, strongly suggesting a lure for users to download further malicious content. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to trick users into downloading malware or visiting phishing sites.

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/479516143/minecraft-mojang-free-game-hack
    • http://arpinoturismo.it/images/free-robux-generator-no-verification_GM431946152.pdf
    • http://arpinoturismo.it/images/coin-master-free-spins-link-haktuts_GM406889139.pdf
    • http://arpinoturismo.it/images/ways-to-get-free-robux_GM431946152.pdf
    • http://arpinoturismo.it/images/coin-master-free-spin-whatsapp-group_GM406889139.pdf
    • http://arpinoturismo.it/images/claim-free-spins-coin-master_GM406889139.pdf
    • http://arpinoturismo.it/images/rbxoffers-com-free-robux_GM431946152.pdf
    • http://arpinoturismo.it/images/coin-master-connection-lost_GM406889139.pdf
    • http://arpinoturismo.it/images/real-working-coin-master-hack_GM406889139.pdf
    • http://arpinoturismo.it/images/xray-mod-minecraft-114_GM479516143.pdf
    • http://arpinoturismo.it/images/roblox-hack-scripts-pastebin_GM431946152.pdf
    • http://arpinoturismo.it/images/play-roblox-free-online_GM431946152.pdf
    • http://arpinoturismo.it/images/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • http://arpinoturismo.it/images/100-free-spins-coin-master-link_GM406889139.pdf
    • http://arpinoturismo.it/images/coin-master-20-free-spins-link-today_GM406889139.pdf
    • http://arpinoturismo.it/images/cheats-for-coin-master_GM406889139.pdf
    • http://arpinoturismo.it/images/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://arpinoturismo.it/images/coinmaster_GM406889139.pdf
    • http://arpinoturismo.it/images/hack-the-coin-master-game_GM406889139.pdf
    • http://arpinoturismo.it/images/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://arpinoturismo.it/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdf
    • https://education.minecraft
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c51.bin
da1ed3861cde2c7e3549f6641bd7598446a80189254a0d6194962df2bf3ade57
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C51 24472 bytes
font_01_sfnt_off000084ad.bin
b5f50bf57dfccd752109e4182842bacf3724a00f1b96a34c084e43a5ee255f71
pdf-font-stream PDF embedded font (sfnt) at offset 0x84AD 18188 bytes