Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f93d38cfa1c5c1…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 13:40:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: feaaec005b9c7449a10bac796c6652a1 SHA-1: 971cb10f1e5070fc1fc8c2fd3cb33f5930cc1186 SHA-256: b9f93d38cfa1c5c1f04174a674a3afde23d9a6480fb3f973272244320372a3d1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that mimic a "Coin Master" game hack generator, a common lure for phishing or malware distribution. The primary embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-game-hack, is flagged as a malicious redirector, indicating it likely leads to a further stage of malicious activity. The document's structure and content strongly suggest a phishing or social engineering attack aimed at tricking users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0115

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-coins-and-spins-game-hack In 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000036c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36C0 24964 bytes
SHA-256: 1dfcb21b79e7ab10d2b852730274a77db5cc5e57d44b77712a3322b978128ddb
font_01_sfnt_off00007086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7086 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00007e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E26 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00008815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8815 18060 bytes
SHA-256: f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb

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