Malicious PDF — malware analysis report

Static analysis result for SHA-256 7678105a92d9b726…

MALICIOUS

PDF

45.8 KB Created: 2021-05-13 07:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0b43c9ae4564a768ea5f4c36f32f4554 SHA-1: 17a111c3a0fbc175663b588dbf6116168bf03a77 SHA-256: 7678105a92d9b726be0f0b7b418a804d53ebd87b4dd99936e8a6528905a34b77
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/431946152/free-robux-codes-no-verification-2021-game-hack PDF link annotation
    • https://imagineclimb.com/images/free-robux-please_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://imagineclimb.com/images/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://imagineclimb.com/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/what-is-robux_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://imagineclimb.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://imagineclimb.com/images/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://imagineclimb.com/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000480b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480B 30940 bytes
SHA-256: d93f5f46fbb4199941ed2326ce1379f38fdc34a5473c1eb2995b475871267229
font_01_sfnt_off00008dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 19176 bytes
SHA-256: db1e34f64d78c47646929d75ef8e7d82dfccacc985d29653851fea35b3c0bf96

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