Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4c30f8f5e4443b6…

MALICIOUS

PDF

37.4 KB Created: 2021-05-14 15:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02aec0a91fdc7fd6d5b60d0f40e5e0d8 SHA-1: 6b2f8a5a09af525f9cd0fc589158ff2a8af0b934 SHA-256: c4c30f8f5e4443b6a6d8bb5cbe8e1f7b1c9fe912679dadd69b20b67e78080cc7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links pointing to a known malicious redirector infrastructure, specifically advertising a "Coin Master Cheats And Hacks" generator. The document body explicitly contains a call-to-action phrase, 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', further reinforcing the lure. While no scripts were extracted, the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt designed to lead users to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-cheats-and-hacks-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
stream_003_off00003728.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3728 25616 bytes
SHA-256: 930cba1eb2d209fa9026ee548e13e09232fece94234fa55b2c99af3136e29687
font_01_sfnt_off000071a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 18056 bytes
SHA-256: 273faeb993e3ec84ab967565c1959c967c02fadeaf14dd0f56592a6134979e3e

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