Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b3e1f96f612b36…

MALICIOUS

PDF

36.6 KB Created: 2021-05-15 08:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cfed46979c5f7e65891545cadf3a0040 SHA-1: 9178b12a8683343a1f6923209676cc976890e76d SHA-256: 56b3e1f96f612b367bf4350b9cf7083d1ec69aa58cbbaf17cf2856240c3c5681
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'Coin Master Free Coins And Spins Daily' generator. This link, 'https://netcdn.xyz/app/406889139/coin-master-free-coins-and-spins-daily-game-hack', is designed to lure users into clicking it under the guise of obtaining free in-game currency. The document body also contains similar text and a call-to-action phrase, reinforcing the deceptive nature of the lure.

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-coins-and-spins-daily-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_off000034ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34ED 25096 bytes
SHA-256: 95e8015eb2977ae824ea8d60f6a7a2f235393cddcbe3320c8b43f178700423a0
font_01_sfnt_off00006d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D33 18480 bytes
SHA-256: afe33923ca989cd5d8a4fb240de59bbfcccaf1928071fdd0e6e63d3de042dc3b

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