Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2dfa146f1640155…

MALICIOUS

PDF

41.6 KB Created: 2021-05-15 11:58:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eef390397dd40dc9cf301836612b568f SHA-1: 45ab193fd98077e49c3a63a5ff8f0226da8f5d21 SHA-256: f2dfa146f164015521c40ab09dde04bf2fbfcb8e4a63347e700f784b3cde7eca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'free coins' and 'game hacks' to entice users to click on embedded links. The primary malicious link directs to a known redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and heuristics confirm the use of deceptive content and malicious redirectors, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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 https://netcdn.xyz/app/406889139/free-coins--game-hack In PDF document text
    • http://brinicombe.co.uk/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://brinicombe.co.uk/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://brinicombe.co.uk/images/i-need-robux_GM431946152.pdfIn PDF document text
    • http://brinicombe.co.uk/images/free-links-for-coin-master_GM406889139.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_off000049e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E9 25244 bytes
SHA-256: 1ce089241153444063c28a0d4d25e4ad12ce4b79c6578a5b894e47edb0c151a1
font_01_sfnt_off000082e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E9 17380 bytes
SHA-256: 4587a0da3d318d3aab2e4d3a2e17e88175961c64bd2fb3ac3dbf4933656e475a

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