Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fc782a1e24b344…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 01:31:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c8d0148c3198a9172eda4c28e7361704 SHA-1: cec3cecc156558c41976d3e8b31d899fe6c76ddf SHA-256: f6fc782a1e24b344155b0449d9cfe9b7ae549755a672dc881f17ce3d5f929884
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary redirect URL is https://netcdn.xyz/app/406889139/free-daily-spins-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to malicious websites, likely for credential harvesting or further malware delivery.

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-daily-spins-coin-master-game-hack In PDF document text
    • http://ag-metal.fr/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://ag-metal.fr/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://ag-metal.fr/images/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://ag-metal.fr/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://ag-metal.fr/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://ag-metal.fr/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://ag-metal.fr/images/free-coins-and-spins-in-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_off00004b7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7C 24952 bytes
SHA-256: b53cecc5d325ed00bd7380590cf45a79f3d7edc774cadbd1a3ff4391b95282c3
font_01_sfnt_off0000842b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 18308 bytes
SHA-256: 55eaac4e6bbee5e06de7435d22c867d27a3c8151a397b13177f5239675c95764

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