Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61715c3db899d1e…

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 05:22:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9212bbfb6ddaafe21d13b44e9cb51d96 SHA-1: 77b4226dff1b88f1e29c94197925e54595805478 SHA-256: b61715c3db899d1eebe9f428578a41ac1967fa0f32994b74d66192f33c69f33d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors and game hack generators, indicating a lure for users to download potentially malicious files or visit phishing sites. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/master-coin-hack-mod-game-hack In PDF document text
    • http://pescatun.es/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://pescatun.es/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://pescatun.es/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://pescatun.es/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000464a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x464A 29288 bytes
SHA-256: 4915273c0459509b1872dbedff9c89d0584966d294f7e0b8a8d6946ef139a9c5
font_01_sfnt_off000083b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B9 17888 bytes
SHA-256: 79663f5c6e364485b04b83db578590d29b6e1ee38eddb5c45b054f63581374ad

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