Malicious PDF — malware analysis report

Static analysis result for SHA-256 5232405c9dec5202…

MALICIOUS

PDF

45.7 KB Created: 2021-05-16 19:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36ce24bc225fc31f098bbdf2b4031d23 SHA-1: 21fd434c43ad6f369fb87b30a3206f0a1653a46a SHA-256: 5232405c9dec52021ac2fb2ec4bfaa173774d84d7ad0bc03500632edc5b90c16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free generator tools. The primary lure URL is https://netcdn.xyz/app/431946152/roblox-jailbreak-hack-download-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure by mentioning game hacks and free items, aiming to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/roblox-jailbreak-hack-download-game-hack In PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-for-free_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_off00004a70.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A70 30572 bytes
SHA-256: 357d649550eb9b1bdbab3e65db9e4e7fd3e1a8fb14f2daa2f719f4b1ab0bc33a
font_01_sfnt_off00008e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E5D 18972 bytes
SHA-256: 261da8cecf88d9fe7cdfdd42a26ac06d4c96d8a11aebf729db611f6a559eb8d5