Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b9f3c03309a959e…

MALICIOUS

PDF

35.7 KB Created: 2021-05-24 16:07:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 11d1a063762a141716d17b9c4244fcf4 SHA-1: b9ab0b194ca7606e24ccc96aaa6895c6ebef82c7 SHA-256: 3b9f3c03309a959efa90573cb230342c5883f06b5edd3a0d3059bc9b36ba9a75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for popular games like Minecraft. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-skins-free-girl-game-hack. The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in scams. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-skins-free-girl-game-hack In PDF document text
    • http://bpbfloydinc.org/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://discord.ggIn 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_off00003560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3560 24032 bytes
SHA-256: 063db1f594846c0ce291abed0b9ce5dcbc1e65016aa9a69168f023c48d050a4e
font_01_sfnt_off00006bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 17812 bytes
SHA-256: 7ce5d1bffc067a7697c6659b9f16d2693dfb8cdcb2edfb00fbdf7ce9282af41c

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