Malicious PDF — malware analysis report

Static analysis result for SHA-256 71ba6f8b36adcaee…

MALICIOUS

PDF

38.0 KB Created: 2021-05-20 03:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 150b397a224a2de35629462b6075438b SHA-1: c547110ee5778b772787bf4e1608188c7de1e3c3 SHA-256: 71ba6f8b36adcaeee96ad8eead7aed3b6e4b9634e49be4879a03685b4623ad60
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'Coin Master Hack' lure. The document body and heuristics indicate a clear intent to trick the user into clicking a link that likely leads to a malicious download or exploit. While no scripts were directly extracted, the PDF structure and malicious links suggest an attempt to exploit the user's interest in game-related cheats.

Machine Learning

  • Nyx PDF Classifier clean score 0.0126

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-hack-org-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003220.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3220 24356 bytes
SHA-256: c4e0024959be91281bb12efa25c6a226db39c4a31112aaf28dc5551448240f56
font_01_sfnt_off000069f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000073a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A7 18004 bytes
SHA-256: 71666c2197313d621a6b2a827eddb6a2562d87326f0c206ff98056d3ecc5d719

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