Malicious PDF — malware analysis report

Static analysis result for SHA-256 46831c8ff3eeea70…

MALICIOUS

PDF

28.8 KB Created: 2021-07-19 06:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fac35a9771d19d074a72b270fcb1dbb2 SHA-1: d03341663985e9ca76c17aef69bf5549ff867d75 SHA-256: 46831c8ff3eeea7092cb879ecb415f3c2f8ad914c076b39f14fd282e1a5480bb
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a website advertising a 'free generator / game hack'. This heuristic, combined with the presence of a call-to-action button, indicates a lure designed to entice users to click through to potentially malicious infrastructure. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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/was-minecraft-ever-free-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_off00001fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FEE 21940 bytes
SHA-256: db6ee570c67e6a416b0798d48d4bdb5b983f35b587e149efd32bd00617c6a661
font_01_sfnt_off00005035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5035 17880 bytes
SHA-256: fa9564ce5793f03604dae66ea4261aaef87f9e1e7420b634dd5196a1b51aa919

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