Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c9fdb6bf4249cf…

MALICIOUS

PDF

39.0 KB Created: 2021-05-17 18:02:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f76867fd14ea39650ce3e8aded74f8ab SHA-1: 065e8328c883692c30d240d48457fb6fc40c307f SHA-256: a6c9fdb6bf4249cf8b877e57056e7b14b25b3f8ca5e8de16755a8c4d6dc43db9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a redirector lure, specifically linking to a "Roblox Free Robux Website" generator. This link points to known malicious infrastructure, indicating a phishing or scam attempt. The document body also contains text and a button lure, reinforcing the deceptive nature of the content. While no scripts were extracted, the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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-free-robux-website-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3348 25436 bytes
SHA-256: 3f6a31bf17ca8421311574a97db4e4c9639f094c059ae5a558fafcdaa4927910
font_01_sfnt_off00006c02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C02 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7611 18508 bytes
SHA-256: fbcd203c7e924a0ebec4ef4aa0eb55ec8b14d1abcc2767c4f5d3ad1ccc86f8e3

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