Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d7208968ac1de3a…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 02:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 153eb250503995e8d057cae959989e2a SHA-1: edffc15054cdf93c79524702072e0ddbde0f34b8 SHA-256: 3d7208968ac1de3a04045f50356ff1fd463aa4de300d85fe3c9fb47557c4c4c7
122 Risk Score

Malware Insights

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

The document exhibits characteristics of an advance-fee scam, presenting a fake CAPTCHA to trick users into downloading a payload. The embedded URLs point to potentially malicious files, suggesting the document acts as a lure for further infection. No scripts were extracted, limiting the analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.tw/app/431946152/the-labyrinth-hack-roblox-game-hack
    • http://killebergsridsport.se/images/coin-master-free-cards_GM406889139.pdf
    • http://killebergsridsport.se/images/roblox-exploit-download_GM431946152.pdf
    • http://killebergsridsport.se/images/coin-master-free-spin-ml_GM406889139.pdf
    • http://killebergsridsport.se/images/how-to-change-your-name-in-roblox-for-free_GM431946152.pdf
    • http://killebergsridsport.se/images/coin-master-free-fire_GM406889139.pdf
    • http://killebergsridsport.se/images/roblox-free-followers_GM431946152.pdf
    • http://killebergsridsport.se/images/how-to-get-robux-fast_GM431946152.pdf
    • http://killebergsridsport.se/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://killebergsridsport.se/images/iroblox-club-free-robux_GM431946152.pdf
    • http://killebergsridsport.se/images/get-free-coin-master-coins_GM406889139.pdf
    • http://killebergsridsport.se/images/free-robux-generator-no-survey_GM431946152.pdf
    • http://killebergsridsport.se/images/withdraw-robux_GM431946152.pdf
    • http://killebergsridsport.se/images/play-coin-master-for-free_GM406889139.pdf
    • http://killebergsridsport.se/images/youtube-how-to-get-free-robux_GM431946152.pdf
    • http://killebergsridsport.se/images/minecraft-free-download-no-virus_GM479516143.pdf
    • http://killebergsridsport.se/images/android-coin-master-3433-apk-hack_GM406889139.pdf
    • http://killebergsridsport.se/images/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdf
    • http://killebergsridsport.se/images/free-coin-master-spins-daily_GM406889139.pdf
    • http://killebergsridsport.se/images/free-robux-only-username_GM431946152.pdf
    • http://killebergsridsport.se/images/minecraft-font-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fcd.bin
ca16fc11e49ce6ba7964975afb5892b210839c9328d9508729509eaf6b403db8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FCD 26152 bytes
font_01_sfnt_off00008b73.bin
434ea80204dfa3965416cdfc29c4369344719692ba7fec8141e738fc7a9bf96f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B73 18752 bytes

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