Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64561fe21f71dce…

MALICIOUS

PDF

43.0 KB Created: 2021-05-15 17:08:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 84f54aaf335fbd73d2f4a94cbc855352 SHA-1: f184e63634dc81af32088b958337a38a3e3f0594 SHA-256: e64561fe21f71dce977b2880d33d48eb135f7ac1653b1c791254dd105fc0bb18
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified as a link farm, with the primary goal of driving traffic to potentially malicious or spammy content. The document body and extracted URLs suggest a lure related to game cheats and hacks, such as 'Coin Master' and 'Roblox'. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links indicate a malicious workflow, likely involving the exploitation of PDF vulnerabilities or social engineering to encourage user interaction with these links.

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/free-unlimited-coin-master-400-spin-link-game-hack
    • https://amazingnepaljourney.com/userfiles/files/coin-master-gold-cards-hack-english_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/mistplay-robux_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-spin-hack-no-verification_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-redeem-code_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
    • https://amazingnepaljourney.com/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/roblox-source_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-daily-spins-and-coins_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/free-accessories-roblox_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/roblox-hack-me-robux_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/roblox-free-clothes-girl_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-hack-coin-master-ios_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/hack-free-spin-coin-master_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/free-links-for-coin-master-2021_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/moon-active-games_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c34.bin
5d3cb1e9cdcd6be593695fffbcf24db246b367d2fc319a9ee669af55b13d5733		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C34 24176 bytes
font_01_sfnt_off000083ac.bin
2e007fc84fc568f88879723ba48bdd06936c094fc864f4c5a558b00572ac3444		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AC 18984 bytes

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