Malicious PDF — malware analysis report

Static analysis result for SHA-256 98033e52a4772ef9…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 07:41:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8dc567ac67c8a3b584abc007d76b8f0d SHA-1: 70848b96427be65732d6d090e58ad4bd23220214 SHA-256: 98033e52a4772ef9ac3f4c3bf1d0a0941bf96adb339e064895735f8f98eedf24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and cheats, a common lure for phishing and malware distribution. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure and potentially download further malicious content. While no scripts were explicitly extracted, the nature of the embedded URLs and the 'game hack' lure suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-without-verification-site-zyngaplayerforumscom-game-hack In PDF document text
    • http://gazelletr.com/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/robux-gainer_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/robloxhacks_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gazelletr.com/userfiles/files/coin-master-daily-bonus-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_004_off00005237.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5237 24036 bytes
SHA-256: 1c5ea21050190e69824bbe6a3251a35d69a1434993e85c2919a6f50ca1eebe84
font_01_sfnt_off00008894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 19428 bytes
SHA-256: fc236007e3560f26c3fe5b7a692e8112a1c9bbf9d85cb94b29ac9a513f83f562

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