Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f7392c6ffd1c52…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 14:04:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 510f28e93ff714ca6d3df86f1dd1e024 SHA-1: 2a23df48b8f0928debca0447ff3742cadcbd8d63 SHA-256: f2f7392c6ffd1c52c8184c42a301e5b418098d668c563d9d284aee597fbbf065
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links to known malicious redirector infrastructure, specifically targeting users with lures for free in-game currency and hacks. The ML classifier also flagged this PDF with high confidence. The document body, though partially corrupted, contains URLs that reinforce the lure of obtaining free items for games like Roblox and Coin Master, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/www.roblox.com-free-roblox-game-hack In PDF document text
    • http://rainbowbuddha.academy/images/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/2021-robux-profe-fro-free_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/set-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/how-to-get-free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://rainbowbuddha.academy/images/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB6 22624 bytes
SHA-256: b4b3f771a012b7a40fd34219cda825571b949d3a2bb30d357a619072c183fa00
font_01_sfnt_off0000623c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 19152 bytes
SHA-256: b79a0da07b57cce5fcba7d9e0b4a2b8a7187e370cecfc313f19f5874b43bff4e

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