Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e73ee1c11fa7eca…

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 10:53:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 987211749bf32bb3daa604a411d83c5d SHA-1: 719a6db8c41569531a8a61c8cc34049e4a5bbdc4 SHA-256: 7e73ee1c11fa7eca0a0fa2c2497f766a0ddea932dc37da1176940aa9c054ad29
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that link to pages offering hacks and cheats for popular games, suggesting a lure for users to download potentially malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, and the ML classifier strongly flagged the document as malicious. While no scripts were explicitly extracted, the nature of the embedded links and the document's purpose point towards a phishing or malware distribution attempt.

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/clover-online-hack-roblox-game-hack
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-2021_GM406889139.pdf
    • http://www.homesweethome.pl/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/free-robux-for-kids-no-verification_GM431946152.pdf
    • http://www.homesweethome.pl/images/como-conseguir-diamonds-en-royale-high-roblox-hack_GM431946152.pdf
    • http://www.homesweethome.pl/images/all-free-things-in-roblox_GM431946152.pdf
    • http://www.homesweethome.pl/images/what-tiktok-free-robux_GM835599320.pdf
    • http://www.homesweethome.pl/images/free-robux-generator-no-survey-or-download-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/coin-master-exchange-40-free-spins_GM406889139.pdf
    • http://www.homesweethome.pl/images/roblox-hack-scripts-pastebin_GM431946152.pdf
    • http://www.homesweethome.pl/images/coin-master-online_GM406889139.pdf
    • http://www.homesweethome.pl/images/free-roblox-groups_GM431946152.pdf
    • http://www.homesweethome.pl/images/roblox-sign-in-free_GM431946152.pdf
    • http://www.homesweethome.pl/images/games-that-give-you-free-robux_GM431946152.pdf
    • http://www.homesweethome.pl/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://www.homesweethome.pl/images/hacks-for-coin-master-game_GM406889139.pdf
    • http://www.homesweethome.pl/images/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://www.homesweethome.pl/images/tiktok-free-coins_GM835599320.pdf
    • http://www.homesweethome.pl/images/roblox-its-free-sparta-remix_GM431946152.pdf
    • http://www.homesweethome.pl/images/free-coin-coin-master_GM406889139.pdf
    • http://www.homesweethome.pl/images/roblox-phantom-forces-free-weapons_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302e.bin
d2f0c928643721b1a1ffce43acc25f3faea13422f1efbd3ce182c601d916f566
pdf-font-stream PDF embedded font (sfnt) at offset 0x302E 22624 bytes
font_01_sfnt_off00006262.bin
2d371921378f34a75213fbca113a84f00ddfccd07c58f7a778e84632ca0d434a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 18892 bytes