Malicious PDF — malware analysis report

Static analysis result for SHA-256 d280f44f1c82457b…

MALICIOUS

PDF

44.7 KB Created: 2021-05-15 22:31:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ae7c422b75368f16e620024297de0a34 SHA-1: 514864ac4a4c5bcfde3d614d9ada169cd2af58f3 SHA-256: d280f44f1c82457b35b99de9e7286227292df228d9fb6efca92cb3fb47db13c3
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or verification prompt to deceive the user into interacting with a malicious link. The primary external URI points to a URL associated with game hacks and free spins, suggesting a scam or phishing attempt. No scripts were extracted, limiting the analysis of further execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/legit-free-spins-coin-master-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-things-on-roblox_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_003_off000048ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CE 24992 bytes
SHA-256: 24a1d39750de48ed6f3c0a0895718776c10b426920977670053f6f65f39414b8
font_01_sfnt_off000082ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AE 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C60 18176 bytes
SHA-256: 0e4f5fc6ff2fec7c34f7a60300b1fa14fa22cd043badad59a9fad54dc28be7cf

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