Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e5b7ae2e6a767d…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 15:42:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7f6466604e2a0dca1a420034762ff287 SHA-1: 556fcfa8689dd6a61dee089c4da5eb85b417b474 SHA-256: c8e5b7ae2e6a767dc1d19b55d9130474972a22809404c7399e996d14b7051ef6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a download button lure reinforces the phishing and redirection attempt. No scripts were extracted, but the document's structure and embedded links suggest it is designed to lead the user to a compromised website.

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/coin-master-free-redeem-code-game-hack In PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/rbx-roblox_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.interiormurahjogja.com/ckfinder/userfiles/files/coin-master-free-spins-hack_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_off00004cb7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB7 24356 bytes
SHA-256: f9936cf4c87fcd5ace5e709d554860a38de1d05add77e362b4aa3b398c8b48e9
font_01_sfnt_off00008483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8483 18144 bytes
SHA-256: 5bbd7c38c96c77c4f9f35a136dd3471001d40e5cdd485746050297559c8b8e4d