Malicious PDF — malware analysis report

Static analysis result for SHA-256 947cd133debf393f…

MALICIOUS

PDF

37.3 KB Created: 2021-05-22 13:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da51603e24dce909fe7bf081f7f824f3 SHA-1: a15c2f28bd4b8b75fc03be4c60132aff21b6c44c SHA-256: 947cd133debf393f7852853586763329f31574e0d2c1763ce0782588c8d5fb87
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and a visible call-to-action button, designed to trick users into clicking a URL that leads to a malicious redirector. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spin-coin-master-2021-link-game-hack, which is associated with game hack lures. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a payload or redirect the user to a phishing or malware site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/406889139/free-spin-coin-master-2021-link-game-hack In PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games_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
stream_002_off000033f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33F1 26308 bytes
SHA-256: cb17b2c832ed383b298883aa9f9d2230fe3ca52f64c75eb0058a6561662a30aa
font_01_sfnt_off00006fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE7 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56

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