Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a6cefc6e88b307…

MALICIOUS

PDF

39.5 KB Created: 2021-05-21 14:47:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 81155a7f92d6c509bb2d6bee0c5ae625 SHA-1: 6573ada966ce68fe667c32dcc58de12d6b38f356 SHA-256: e7a6cefc6e88b3079fb7d3223f21e9a19a657917cd5583d30d20f28f68bca7a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as a game hack generator. The document body and embedded links strongly suggest a lure for users interested in obtaining cheats or generators for games like Coin Master. The presence of a malicious redirector URL indicates an attempt to lead the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/how-to-hack-coin-master-game-hack In PDF document text
    • https://www.sensationboats.com/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/minecraft-hacks-ps4_GM479516143.pdfIn 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_002_off00003527.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3527 25932 bytes
SHA-256: 98aa4eedc7733bc8ea4bd2f92d2fa82f2f81bedc323a4f2b337348b9372afca0
font_01_sfnt_off00007048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7048 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000079f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F9 17880 bytes
SHA-256: 811ddb8557bc0f5be85009fa6d5ae0baa2b7fc09c58d91c5790597872cecd122

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