Malicious PDF — malware analysis report

Static analysis result for SHA-256 d646e656ed6788fe…

MALICIOUS

PDF

42.3 KB Created: 2021-05-12 08:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d6852f16c0ed6219acd07c10c576da84 SHA-1: d5ed6672c8fabfbccc8aaccf2a5504d1973cba4f SHA-256: d646e656ed6788feb12160fc0af08dc542b4a42e116fc9aad1a94a8da49d48c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of 'free generators' or 'game hacks'. The embedded URLs, such as https://netcdn.xyz/app/431946152/robux-free-2021-game-hack, are designed to lead victims to scam websites or potentially download further malware. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scamming 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/431946152/robux-free-2021-game-hack In PDF document text
    • https://www.zagorjeadventureteam.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-buy-robux-for-free_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
font_00_sfnt_off000043fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43FE 27980 bytes
SHA-256: 5c26bafcbe6dc167868ef6d55c56b5a0bdd6da09db4dff7541c45f06ad626a97
font_01_sfnt_off00008259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8259 18416 bytes
SHA-256: 1a644f5289783458eb76ac5741ebd0afe9ba6d8f40911ca8ddb4573f3c6c1b2f

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