Malicious PDF — malware analysis report

Static analysis result for SHA-256 612267291a1b9ef7…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 04:40:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 863735d04abe7772f76b12fcdd65ce63 SHA-1: ae5ae1b8cc1deae2d3e11f6d2b49220bf19f5829 SHA-256: 612267291a1b9ef7035f9fd6c641eee60dce3ef3257d9df4b8f4a5738c8e08f9
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or verification prompt to trick the user into interacting with it. It contains an embedded URI pointing to a suspicious URL, likely intended to download a second-stage payload or redirect to a malicious site. The presence of multiple related URLs further supports a phishing or scamming campaign.

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/play-coin-master-game-hack
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-now_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/minecraft-116-1-download_GM479516143.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/spins-for-coin-master_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-premium-roblox_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-hack-download-apk_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-roblox-com_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-app-reviews_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/roblox-free-hats_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdf
    • https://elearning.man2semarang.sch.id/__statics/gudangsoal/files/free-robux-now_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b06.bin
ab4467b4457f64f132f7d9de2d06592e32a8bdd7e6da00b3a7a66e10db0db1fd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B06 25592 bytes
font_01_sfnt_off00008532.bin
3643e479f0c37cbf16fafc1a8fc3121dcb1ff233e4f2886a877cfbec5145750a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8532 17956 bytes

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