Malicious PDF — malware analysis report

Static analysis result for SHA-256 79dee8a717530d08…

MALICIOUS

PDF

39.9 KB Created: 2021-05-14 09:48:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5793cd2ef909f4f5542f255370081849 SHA-1: eb7551b2341b51be388e8ca5e4d33778033e4a43 SHA-256: 79dee8a717530d08206a03c8f42fe99794565d7fe1e3f1eb69b690cee7933c3c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious infrastructure, specifically advertising a 'free generator' for Roblox. The document body and heuristics indicate a lure designed to entice users to click on these links. While no scripts were directly extracted, the PDF structure and malicious links suggest an attempt to lead the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/how-to-change-your-username-on-roblox-for-free-game-hack In 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_off000037c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37C1 26852 bytes
SHA-256: 097f4c9646b4762a219eec7ebd2140aaeac5106ca0d2eed76bcf1a7c35b24a50
font_01_sfnt_off00007779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7779 19540 bytes
SHA-256: 93794ea5a6c5acfa8b9ea336c7fa02a00f4c27ab4f9922f3137d25115e5793d6

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