Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e5ec997e694114…

MALICIOUS

PDF

28.7 KB Created: 2021-07-19 06:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b2f91b00215bc042031cedbbd3b56fa8 SHA-1: 7809b15625457b3608743eef8ef62017e693d1e1 SHA-256: 69e5ec997e6941146df9c4f5608887197b2bd894f9d86345703a41aa36cacb28
130 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'Minecraft Hacked Client'. The presence of a call-to-action button further supports a social engineering lure. The document's purpose is to trick the user into visiting a malicious URL, likely to download further malware or exploit a vulnerability.

Machine Learning

  • Nyx PDF Classifier clean score 0.0373

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.tw/app/479516143/best-minecraft-hacked-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_off00001f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F44 21736 bytes
SHA-256: cd4f25251da8ff89feecaf4ac41f264a7247bd1d754af43c6f0f5b45fe345874
font_01_sfnt_off00004f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F12 18200 bytes
SHA-256: 05f9c4237b996275e109c4becad50b5cb7d88affc4d3e55964976ee2f9eee8f2

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