Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ce121aba47d2ae…

MALICIOUS

PDF

37.3 KB Created: 2021-05-13 01:12:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 08718ebc436c758b70fc8d929860cacd SHA-1: fe1825c12e2db7eab16a5e16ae5b32ad8c1f514d SHA-256: f6ce121aba47d2aef67beda9b7e386fd2290790f42f75319937743da6ce0fe58
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it's a lure for game hacks and links to known malicious redirector infrastructure. The embedded URL, 'https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-android-game-hack', is the primary indicator of malicious intent, likely leading to a phishing or malware download site. Although no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/479516143/how-to-get-minecraft-for-free-on-android-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_off00003731.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3731 26380 bytes
SHA-256: 6b73c9a52a30b37d9fe0e51fd236cee09526319b6636e547185d7fac5435ab09
font_01_sfnt_off00007126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7126 18048 bytes
SHA-256: 8059851acc98585c267d1a0730441da2490f7a27bb6efaac05b05bf58a4bb166

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