Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5f0254423fb2ca…

MALICIOUS

PDF

36.6 KB Created: 2021-05-17 16:13:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6d692005a11209135e1d2fd1fecc80b1 SHA-1: d11c244c420841611b13e4a04135ddf5b4b655df SHA-256: ee5f0254423fb2ca70f077d9ac8c1f79886c8f5024b3e699434b16448a125225
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically advertising a "Coin Master Free Spins Cheat". The embedded URL leads to a known malicious domain. While no scripts were extracted, the document's structure and content strongly suggest a phishing or scam lure designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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-spins-cheat-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D6 25612 bytes
SHA-256: b5cc4ca53b7936f3ec35c37f5a28dc7f17f99c4dea41238bdd4669033139f00d
font_01_sfnt_off00006e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E80 18052 bytes
SHA-256: 9bd717b0e04310867829ca511b483eebbd60050a5b8b31305794fbcb17f8519e

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