Malicious PDF — malware analysis report

Static analysis result for SHA-256 694f4f607439a2c2…

MALICIOUS

PDF

36.5 KB Created: 2021-04-28 20:11:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6726cad572e158fa3506d28beb86be92 SHA-1: 7874d3c93c87fc898a5aa6054d6a1d76350c42ce SHA-256: 694f4f607439a2c27dd297495f5ce28af1b1c09dad224f17fda6e6613845c4ca
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 game hack redirect lure, pointing to a URL associated with malicious redirector infrastructure. The document body and metadata also contain references to this URL, reinforcing the lure. The embedded URL is designed to trick users into clicking through to a potentially harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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/free-gamepass-roblox-script-not-patched-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_off00003181.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3181 25064 bytes
SHA-256: f82eec4e09d0ad59590cea9de19771132932f46755ace96d1d3a9ef53e174cad
font_01_sfnt_off00006a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A65 19328 bytes
SHA-256: 4b6c50ef6d9e5f8cec7055feddaa518b9715eab681c6e29f810bcf12425fe27a

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