Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f02f312545e676…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 08:04:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c7f7a25787a35f88c5d2bc33ac4918be SHA-1: dab277d102e16edf700a5c82279b2925474e4f31 SHA-256: 09f02f312545e6760bcc659286185ba6cb45cbfa3e09571000c8ab76ff24ed53
102 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and includes a call-to-action phrase, strongly suggesting a lure to trick users into clicking malicious links. The embedded URL and numerous other URLs point to sites offering game-related cheats or hacks, which are common pretexts for malware distribution or phishing. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-spins-for-coin-master-2021-game-hack
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-fb-free-spins-link_GM406889139.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/play-roblox-for-free-on-google_GM431946152.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/wurst-112_GM479516143.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/robux-earner_GM431946152.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-cheat-free_GM406889139.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/hack-xp-net-coin-master_GM406889139.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/minecraft-skins-download-free_GM479516143.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/free-robux-mod_GM431946152.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/mathep_GM431946152.pdf
    • https://www.indo-parabola.com/ckfinder/userfiles/files/fighting-free-card-coin-master_GM406889139.pdf
    • https://indo-parabola.com/ckfinder/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a2a.bin
dae96764196d7c62d04a49ff4d6a3197c8d6945c041fedea865e81470b900157
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2A 25244 bytes
font_01_sfnt_off00008400.bin
66febbde5b4b2b6a44609229e8681f3f0581fff3ed5f82ed8e3d83342858c217
pdf-font-stream PDF embedded font (sfnt) at offset 0x8400 18288 bytes