Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3ae58ad2bb280e…

MALICIOUS

PDF

35.8 KB Created: 2021-05-10 12:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6e2427371b19fb2f129ffcae1e46aad9 SHA-1: 63fa7bc3d00001ca91f8a47be0c4b25ee253fe93 SHA-256: 9b3ae58ad2bb280ea29b8786e771b7b09d9fb3ebbe908eb46aaf5e7e64ba107e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a lure for a 'free generator / game hack' and links to known malicious redirector infrastructure. The embedded URL, https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-phone-game-hack, is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to redirect the user to a potentially harmful site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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-phone-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_off0000335b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x335B 24932 bytes
SHA-256: 4fb4f3ec6e38e9b6309a771eab6dade63673121cb9bf30ba62111f062082582f
font_01_sfnt_off00006b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B22 18192 bytes
SHA-256: 90b6a34edb34d309cd556a6b23817db9766b775643cedc81c4ce7203f03c64d4

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