Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf424d8524fb02f…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 22:57:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4a920b90d2447671bd3275256163497d SHA-1: 2289731d8b53b975dd622845e82d4c619defe544 SHA-256: 0cf424d8524fb02f93c749f72486e972a31723ef45a1e7e54b85af737435f3aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as 'game hacks' or generators for popular games. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the embedded links and the nature of the lures suggest an attempt to redirect users to sites that likely host further malicious content or phishing pages.

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/431946152/roblox-ftw-game-hack In PDF document text
    • http://greenoase.be/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://greenoase.be/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://greenoase.be/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://greenoase.be/images/robux-hack-no-human-verification_GM431946152.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_off000046b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B7 25848 bytes
SHA-256: f4b361a0abbc3e5ee958834156fb4555b199cc6fe1857b3f27d16b0e52513825
font_01_sfnt_off00008064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8064 18216 bytes
SHA-256: 1d50de4617ba4833758eaeaefdb81b723ed2f26f16522b6b79df10ef9fbd4a9c

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