Malicious PDF — malware analysis report

Static analysis result for SHA-256 450ae9e540dc3f82…

MALICIOUS

PDF

41.5 KB Created: 2021-05-19 16:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33cf5a65be7f0a3530d43ac5bdc81dd3 SHA-1: e60cb33335f73a426abb9b459efa44b3352c0324 SHA-256: 450ae9e540dc3f82c1a75617da17eccfffbdd98a1df3de1729b493018748dffb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures. The primary redirector URL is https://netcdn.xyz/app/406889139/hack-coin-master-no-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further payload delivery or phishing.

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/hack-coin-master-no-verification-game-hack In PDF document text
    • https://www.manmed.info:443/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/robux-game_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/ww-roblox-come_GM431946152.pdfIn 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_off00004901.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4901 24572 bytes
SHA-256: ac0de8d49ba289d8d76f8a9bb9c90886a40f9048cbbd7bc9c5a30230d1024921
font_01_sfnt_off0000810c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810C 17848 bytes
SHA-256: 9aea3c3bd6d72a301cebd4b8c3a59d28c82f5f14f1d448acc55e037e8952ee0a

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