Malicious PDF — malware analysis report

Static analysis result for SHA-256 323342d7f41f04c5…

MALICIOUS

PDF

31.4 KB Created: 2021-05-21 09:44:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6fe93b7d91055cd3cc1571cfd0f9072 SHA-1: bf21b6f39ddd9821757fbc58b9fd52c76f79ae43 SHA-256: 323342d7f41f04c5a3fee98a9ee54051c4e6d80204c67e0f90101a0264bb1046
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are identified as malicious redirectors, specifically luring users with 'free generator' or 'game hack' content related to popular games. The document body and embedded URLs confirm this lure, directing users to sites like 'netcdn.xyz' and 'quatangthienthan.com'. These links are designed to lead users to further malicious content or potentially download unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9401

Heuristics 3

  • 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.
  • 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/406889139/coin-master-free-2021-spin-link-game-hack In PDF document text
    • http://quatangthienthan.com/images/dailyrobux_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://quatangthienthan.com/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://quatangthienthan.com/images/hack-coin-master-download_GM406889139.pdfIn 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_002_off0000336c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336C 25896 bytes
SHA-256: 74829ca75e7346c7021b9be5080c7093a59c1a417df9269fabcf3ca88978d216
font_01_sfnt_off00006e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E68 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98

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