Malicious PDF — malware analysis report

Static analysis result for SHA-256 79768178b82579f6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 04:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a563000a91f8a696a23aa5b8a381bab SHA-1: 3790d0c398acbfa37eb766b9d3fc1fa4c97b70d4 SHA-256: 79768178b82579f671c69b4cd8813fa02d5ddc61ddbd2696e28a97a6c6d160f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs designed to lure users into clicking on links related to free game currency or hacks. The primary redirector URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-daily-2021-game-hack, is flagged as malicious. The document body and heuristics indicate a social engineering tactic to drive users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-spins-daily-2021-game-hack In PDF document text
    • https://audev.com/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://audev.com/images/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://audev.com/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/robux-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://audev.com/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://audev.com/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004975.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4975 24944 bytes
SHA-256: d04e22343b0861d89a9af1998db063c66684474d324ffc0fbb023d334b7de0df
font_01_sfnt_off0000810f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810F 18708 bytes
SHA-256: 6b4e533402effa4bef1f1a99bc4bd1715a96498a79031c9daf0202c2985212b5

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