Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd25195d0dc1faba…

MALICIOUS

PDF

40.2 KB Created: 2021-05-13 13:11:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1233a16afe1f43434eb8118a8471dfcf SHA-1: fe7cee01e451df545a4b81af5b8883e0d40ac3e7 SHA-256: dd25195d0dc1faba14c3f33b017ea17da0fb2e42203dd317dccda0c6c3cd250a
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Roblox Script Hack" and a "generator" which directs users to a known malicious redirector URL. This indicates a social engineering attempt to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting. The embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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-script-hack-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_off000030f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F1 26576 bytes
SHA-256: 199ea72bebf9cb08552e76a90ddb798a50b1857698c95e05cadf88050dfbff98
font_01_sfnt_off00006e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E11 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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