Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ce9143472aef63…

MALICIOUS

PDF

34.9 KB Created: 2021-06-17 16:50:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9b98acc1c36b13d3883b37183b27e55 SHA-1: bd53cc08343d8eee2b58208f95a50da99d4d8e5e SHA-256: 83ce9143472aef63bc3c8c67c479e47b2b09aa6cfa5b62d02e8fc42e7b8095bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote a 'free generator / game hack', which is a common lure for malicious content. The primary link directs to a known malicious redirector infrastructure. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-online-robux-generator-no-download-game-hack In PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/roblox-hax_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/roblox-ms-5-hack_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.99champions.com/uploaded_files/userfiles/files/coin-master-free-spins-uk_GM406889139.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
font_00_sfnt_off00003057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3057 22564 bytes
SHA-256: e7abf42c3971c785000fc154d236534617c83c811c49648775360c79a7be6ba7
font_01_sfnt_off0000627a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 19332 bytes
SHA-256: 399e3722f3608df496ff22b629bc5919d4c24af9a06c2e7d973b8337b3fd8c64

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