Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d08894367d56097…

MALICIOUS

PDF

43.3 KB Created: 2021-05-18 00:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f9d2b674dc975b7a2f233f7d15bb12f3 SHA-1: 81a56e1c537cd05cd31f7fa93078ae391bb11d29 SHA-256: 1d08894367d56097bb5e59f92739b4531bfcfc65ba8b08af8bdf00ec1996e7ab
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to other PDF files, suggesting a link farm or SEO manipulation tactic. The primary URL and document body content indicate a lure for downloading a "Coin Master Hack App 2021", which is a common pretext for distributing malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-app-2021-game-hack
    • http://italianconnectionsleaford.co.uk/images/minecraft-apk-114-4_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/roblox-free-models_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/free-spins-for-coin-master-that-work_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-daily-free-cards_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/minecraft-multiplayer-free_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-card-collection-hack-2021_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-robux-games-on-roblox_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-game-hacking-tricks_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-online-2021_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/games-that-give-you-free-robux_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/hack-crack-for-coin-master-currency_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-minecraft-mods_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/toolbox-for-minecraft-pe_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-apk-hack-mod-download_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-card-collection-hack_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-coins-spins-on-coin-master_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/minecraft-online-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b11.bin
0d83509684cb8e436825ee7af4e15c926ec0f5242f29a9acf1b933caa4f1b8ce
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B11 26156 bytes
font_01_sfnt_off000086ea.bin
bf349ca5353405da50dde13ab4b8c776ba4b0a629ab8eb4a4600605684f4a994
pdf-font-stream PDF embedded font (sfnt) at offset 0x86EA 18296 bytes