Malicious PDF — malware analysis report

Static analysis result for SHA-256 a229b58693ecf731…

MALICIOUS

PDF

38.4 KB Created: 2021-05-10 12:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ba246b28651f0c53aef12962e2f220f SHA-1: f6e7a3daeff3e9b4259fef87d1a86b392c313c51 SHA-256: a229b58693ecf731fb91ab8d0e796ac2d242004f9353bc27c0cee404008cff36
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to malicious redirectors, specifically advertising a 'Coin Master Spin Hack'. The document body includes phrases like 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a social engineering lure. The heuristics confirm the presence of malicious redirector links and a general lure for downloads, suggesting the file is designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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-spin-hack-without-verification-game-hack In PDF document text
    • https://coinmasterspinandcoin.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000032d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D0 24216 bytes
SHA-256: fb1baf89d12b2f7c0e56437c3211bad85a5e38814ce4c7b7e5d7c3c32a11b5b5
font_01_sfnt_off00006a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A01 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000073b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B3 18528 bytes
SHA-256: bf3f764869c6a31c5cda1c047c35a78fe470abce066a28f55ed89f494fef0fb5

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