Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14026bc3871496c…

MALICIOUS

PDF

36.0 KB Created: 2021-05-20 13:00:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5c32914f987ad1c620dc3dfa7d5f04c3 SHA-1: 8bed6509f2120e9e10cd11174793c9af447885e7 SHA-256: c14026bc3871496c67bc87f45da2b58e7cafac73fafed2b0c4b5b4a039112c26
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirector infrastructure, specifically advertising a 'Roblox Hack Client' and 'generator'. The embedded URL `https://netcdn.xyz/app/431946152/roblox-hack-client-game-hack` is identified as malicious. The document body also contains a call-to-action phrase, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-hack-client-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_off00002cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF3 27288 bytes
SHA-256: 9191098c192070ae0a8a7a2e5fe20082de64a6f151cc89a252a269abaa995911
font_01_sfnt_off00006b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B21 18408 bytes
SHA-256: 550f62bb1f49814ef42b1b735b63b4edf215944f9d7482118736a3d91d594bfc