Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d15a7a0c74b0b6d…

MALICIOUS

PDF

26.5 KB Created: 2021-06-27 17:15:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 34ddcc8cbf5d00a2a3064f40498241e7 SHA-1: 8920bd951afa8bcb5a5d8137960921eccdc78cbe SHA-256: 4d15a7a0c74b0b6d1a1af5130566a83da50253280ebb91a2256ee74b60a0f215
130 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a redirector lure, specifically linking to a 'free generator / game hack'. The embedded URL 'http://netcdn.co/app/431946152/aimbot-download-free-roblox-game-hack' is associated with malicious redirector infrastructure. The document body also contains text related to 'Aimbot Download Free Roblox' and a 'CLICK HERE TO ACCESS ROBUX GENERATOR' call to action, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0372

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 http://netcdn.co/app/431946152/aimbot-download-free-roblox-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
font_00_sfnt_off000013a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A5 21296 bytes
SHA-256: 164d342bf2a8104515b6d4732e228c0a3b40e4f15a0bcb8f7de073935a6601c7
font_01_sfnt_off0000420a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420A 19640 bytes
SHA-256: 0bf90190aa96b52a4b718550133518eab65afd04beaba4ee6e93934c37287f03