Malicious PDF — malware analysis report

Static analysis result for SHA-256 af6f5658c8d9479b…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 05:17:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 554ee4ea64809c2d5df144b9851887bc SHA-1: 3e5113cbe45ba6a7b9ba62b19d28c32f8e3625b3 SHA-256: af6f5658c8d9479bf4b245d44ffb3efea1ebfdce2cc3530440b3d8c6ce392307
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-android-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt, likely leveraging a social engineering pretext to drive traffic to malicious sites. The ML classifier also flagged this PDF with high confidence.

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/431946152/free-robux-android-game-hack In PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/freecoins_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/roblox-18_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/huskybuscom-free-robux_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_off00004bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC8 24952 bytes
SHA-256: 6ac97258841515f8c34568c841286898bde69b74a03bc1b7a27454a41a715713
font_01_sfnt_off0000858b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858B 18308 bytes
SHA-256: 3d682ae06d788585f0d48ef4471ddbfed33e391fd6a867cb0ce2fb595824b3ec

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