Malicious PDF — malware analysis report

Static analysis result for SHA-256 0099ff6df925bcb2…

MALICIOUS

PDF

34.3 KB Created: 2021-05-10 11:22:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ddf63ca09b1f340c1c441c5f7fd07d15 SHA-1: d0ad7ca78a6ebe13937f3a477bddd4687250608b SHA-256: 0099ff6df925bcb2924793cab892065c1b2fbe5dc64d3477352ddedc566ec3cc
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically targeting users interested in Roblox game hacks. The embedded URL leads to known malicious infrastructure, suggesting an attempt to trick users into visiting a compromised site. While no scripts were extracted, the PDF structure and heuristics strongly indicate a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0077

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-weird-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_off000023bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23BD 24032 bytes
SHA-256: 5d2865d69fe8cffb32c00df69ecf268977016d15187d54567f72eb18a57b98a4
font_01_sfnt_off00005a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A31 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000066d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 17508 bytes
SHA-256: 345419ea78245d23e9c89828bc0415f34cf0bcc189f27ae7a16a930f9b3324c4

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