Malicious PDF — malware analysis report

Static analysis result for SHA-256 c592ed2e88517926…

MALICIOUS

PDF

42.2 KB Created: 2021-05-13 19:38:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1c7c1a40c1f3aa017b6154e8a3534958 SHA-1: e84c34b512eccce0692fe5be7fe3c142e7c8e3b2 SHA-256: c592ed2e88517926cad0ba2358371a081563020665d55f029e7b784586c1666f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document presents a fake CAPTCHA or human verification prompt, a common lure to trick users into downloading malicious files. It contains multiple embedded URLs, including one pointing to a potential executable disguised as a game hack. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/kachifpro-game-hack
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/minecraft-free-version-pc_GM479516143.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/roblox-comroblox_GM431946152.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/roblox-free-online-game_GM431946152.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-hack-lost-world-2021_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-working-hack_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/collect-free-spins-for-coin-master_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-unlimited-robux_GM431946152.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-free-spain_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/make-your-own-minecraft-server-free_GM479516143.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/master-coin-hack-apk_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-twitter_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/games-like-coin-master-for-free_GM406889139.pdf
    • https://elearning.mariyadl.sch.id/__statics/gudangsoal/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bc5.bin
5eaa7a5bcaaa86031dde63118089f5dd233213bd043272d4f9d8e7290e024cc6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC5 24948 bytes
font_01_sfnt_off00008447.bin
f5f16e9fe06415f99f9f196ec79e922628d3dac9c37f6a7894d79eeb781dffd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8447 17784 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.