Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2115f2a665c979…

MALICIOUS

PDF

39.7 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: 1ed14da39768695c73e53d36238e1288 SHA-1: 207fcdb4cec86ffba99c2ccbc2e6dca38e55a549 SHA-256: 9e2115f2a665c979049f45364313754725ff46b911dd47592b287875091f9171
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'Coin Master Free 2021 Spin Link' and 'game hacks'. These links likely lead to the download of a second-stage payload. The document body and heuristics strongly indicate a lure-based attack designed to trick users into visiting malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

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
font_02_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 18456 bytes
SHA-256: b7ae3d16bb028351929840db057611194e7c02105e6dbd3e36d0326cc4cd0414

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