Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7937853ab57ff8…

MALICIOUS

PDF

42.9 KB Created: 2021-05-15 01:26:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f99edb2a5a89113012cdd96ea5ce0a1f SHA-1: c3dc8d0015d7a8b12019e5d2bee0c79d100ef568 SHA-256: 2b7937853ab57ff84e98cee90a325582bc4b096aa4316972538ca9d05986ff1c
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with a malicious link. The embedded URL and numerous other URLs found within the document suggest a phishing or scam attempt, likely leading to a malware download. No scripts were extracted from this sample.

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/free-coin-master-glitches-game-hack
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-get-free-followers-on-roblox_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-redeem-codes-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-spin-link-for-coin-master_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/100-free-spins-for-coin-master-2021_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/oprewards-com-earn_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/roblox-gang-rape_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/coin-master-hack-apk-35-8_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/inappropriate-roblox_GM431946152.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/wurst-minecraft_GM479516143.pdf
    • http://miperwanida.me/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000497d.bin
9e0813fb2c2066cec68713cdca5f624d845abdf9fa15b81d964d3afab93fd0f7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497D 26608 bytes
font_01_sfnt_off000086b2.bin
46024ec7988d8a29f9899108edac54a6ffad934125eaec0bee682c20bd570941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B2 17952 bytes

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