Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27e9087d36b77b1…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 15:03:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3adcd90937385b0488d9f871a00a1aae SHA-1: ca1400c4df5f41c1554d3de8ab1f99eeb377dc73 SHA-256: d27e9087d36b77b13adecafac02fd9bb8a5f339b427eaeb6b1fab23d1248d6fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The presence of embedded URLs and a visual download button heuristic further supports this. While no scripts were explicitly extracted, the nature of the links suggests the document is designed to lead the user to a site that may host further malicious content or exploit.

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/roblox-rewards-game-hack In PDF document text
    • https://razredna-nastava.net/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-followers-generator-2021_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_003_off000045b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45B6 25772 bytes
SHA-256: 9d2d9070d246af9fc98132c517ccd88f7ff55364521a58608c88e99a57337f90
font_01_sfnt_off00007f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5B 18348 bytes
SHA-256: e746527f818eeec2fed82505c45458a072d0ef9a1f0f70f4e50d0d9e13a60d55

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