Malicious PDF — malware analysis report

Static analysis result for SHA-256 091752f2a410af85…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 23:15:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 00d8c2f8b4ce83edf3894710e6df0a55 SHA-1: bcc8b2308a2c0346f10ffda627fe801a75a70149 SHA-256: 091752f2a410af85f8940ae7fa43d1ff58a0be5923979506f3567ff5a97a38b4
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to deceive the user into downloading a malicious application from the provided URL. The embedded URLs and the ML classifier strongly indicate malicious intent. The primary attack pattern involves luring the user into executing a malicious file disguised as a game hack or cheat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/wwwcoin-master-hack-apk-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AB 25848 bytes
SHA-256: 94ea53ea5f251db530650d361dd010bd1078444da5fff2419176c484f10895af
font_01_sfnt_off00008a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 3204 bytes
SHA-256: b7fe42cb1da39e96c756399b3532633df029c1fbb3443b9e17d98df25c90dc65
font_02_sfnt_off00009596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9596 18252 bytes
SHA-256: 6ad30ca5bc7219b5bac55008a01cbe3e57e256f2ef7eba8ef5748447f010f172

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