Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc3731b98342c61…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 09:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 993e58f84a1af6b9399fb910056b171a SHA-1: 16667979e4970d3951857af7faabe0398b0b71d8 SHA-256: 3cc3731b98342c616320bb5b3a7a93d595f95eb4204b3be793764bb4d3c3ebe7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains social engineering lures, including a 'ClickFix' style attack that instructs the user to execute a command. It also embeds external URIs pointing to potentially malicious content, such as 'https://netcdn.xyz/app/479516143/simplysarc-game-hack'. The presence of these elements strongly suggests an attempt to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/simplysarc-game-hack
    • http://news123.it/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://news123.it/images/20-free-spins-coin-master_GM406889139.pdf
    • http://news123.it/images/today-free-spin-link-for-coin-master_GM406889139.pdf
    • http://news123.it/images/coin-master-free-spins-1701-20_GM406889139.pdf
    • http://news123.it/images/coin-master-apk-hack_GM406889139.pdf
    • http://news123.it/images/coin-master-mod-version-free-download-ios_GM406889139.pdf
    • http://news123.it/images/minecraft-apk-free-download-016-0_GM479516143.pdf
    • http://news123.it/images/coin-master-daily_GM406889139.pdf
    • http://news123.it/images/get-free-spins-coin-master-link_GM406889139.pdf
    • http://news123.it/images/coin-master-gold-cards-hack-2021_GM406889139.pdf
    • http://news123.it/images/hack-download_GM431946152.pdf
    • http://news123.it/images/coin-master-free-spins-link-may-2021_GM406889139.pdf
    • http://news123.it/images/minecraft-aimbot_GM479516143.pdf
    • http://news123.it/images/roblox-script-hack_GM431946152.pdf
    • http://news123.it/images/roblox-mobile-hack_GM431946152.pdf
    • http://news123.it/images/free-coin-master-cards-link_GM406889139.pdf
    • http://news123.it/images/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdf
    • http://news123.it/images/coin-master-hack-2021-ios_GM406889139.pdf
    • http://news123.it/images/websites-that-give-free-robux_GM431946152.pdf
    • http://news123.it/images/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b67.bin
7957935232f4f9961d2ce9f5146c088c516d4eafd6589a300afb27e67de1219d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B67 25120 bytes
font_01_sfnt_off000083ad.bin
d1e3c8cc46daa8b4e8a3620fd036fa3afc0951971ec214e12238e772f71f3550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AD 18156 bytes

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