Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8374cdad486d6c…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 11:02:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: baea976b1ddabec784783da2c6af8ad4 SHA-1: 2b646995284ed3c4dc5d0a1f91752f4a8f482f7d SHA-256: bf8374cdad486d6cf5a7c504b84e5688be76a2b8609adcb8459dc24751ccca8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings strongly indicate a malicious redirector designed to lure users into clicking on these links. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to deliver a malicious payload or lead the user to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/roblox-fly-hack-game-hack In PDF document text
    • https://www.sauvonsleclimat.org/images/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/roblox-free-play_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://www.sauvonsleclimat.org/images/how-to-get-free-spins-and-coins-on-coin-master_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_off00004a58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A58 25612 bytes
SHA-256: 97423f1a2071232d1a9455f1f56854832fee78c0f673e913ee9ae4ae723dff19
font_01_sfnt_off000085a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A7 18528 bytes
SHA-256: 48aa5298b09ebe1486756ea90f1095ff6b224374f32c9ff4b9ed1390be9ca915

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