Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca14b4f8f18d051…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 03:07:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 16e388e7681126be6461d0471271d20d SHA-1: 2d3abce8f4e7e14c0a6d61f7d908ca0a91fe2aa6 SHA-256: 4ca14b4f8f18d0514728c4956af6e9c1ec16a65c1d234b9cbab66449a968e341
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game currency or hacks, directing users to multiple redirector URLs. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-verifying-2021-game-hack. The document's structure and embedded links strongly suggest it is designed to lead users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-without-verifying-2021-game-hack In PDF document text
    • https://www.lavigny.ch/images/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.lavigny.ch/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://www.lavigny.ch/images/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/robux-boost_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • https://www.lavigny.ch/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://www.lavigny.ch/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://www.lavigny.ch/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://www.lavigny.ch/images/microsoft-robux_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_off00004a36.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A36 24828 bytes
SHA-256: cca4c7e5c137d99134b52613940c596a09fb099e375ba334be9cfcc3574660a5
font_01_sfnt_off0000829b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 19772 bytes
SHA-256: 854662d4ed02eaea1b0a0020fc7ac25fa5b331288bf96b43491be4028b138ed1

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