Malicious PDF — malware analysis report

Static analysis result for SHA-256 b996fa1bf71d9608…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 10:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 06438af4b5c3e87e362124b1f09901b0 SHA-1: a583538a645e650285c949624a08a36aa4408131 SHA-256: b996fa1bf71d9608baf7277f9cc915a663c6df2fd3da53a2540b976ab27e7625
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector leading to a 'game hack' lure. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or exploits.

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/1330123889/pubg-uc-on-discount-game-hack In PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-account_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://www.levanajewelryclub.com/uploaded_files/userfiles/files/free-robux-mobile_GM431946152.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
font_00_sfnt_off00004482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4482 29172 bytes
SHA-256: 1a8dcffe66093180eba4ece170f142e387b8a0454fb36f3c1782df6a0291c13d
font_01_sfnt_off000085ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 18432 bytes
SHA-256: 0655261c84b5fa3f4c3b6f4529936c408c242175811dbd735e1c677ec7895855

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