Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3d2bce052c55bb…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 00:27:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7c21f7e8a02e47b45997d9b04772c323 SHA-1: a9fa34df5361eda79bb7e37bc40d4c54b591ad6e SHA-256: fd3d2bce052c55bb99a0fbed6e7558ef50c6584775d85501cf207fb926b5069b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically targeting users interested in Minecraft. The document also suggests the content might be a password-protected archive, a common tactic to evade security scanning. The primary IOC is the malicious URL which likely serves as a redirector to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/free-online-minecraft-server-game-hack PDF link annotation
    • http://zagi.hr/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://zagi.hr/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-hack-without-verification-code_GM406889139.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_off00004929.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4929 24964 bytes
SHA-256: 4ead50ef26cdc6d035083054aa21710459a118ad118bc81f63fc00ad8a8cf373
font_01_sfnt_off000081fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 17756 bytes
SHA-256: 14377ac3d18db81ff7447bb693ccee55c7f80471e2aeaf98ca779f1b2357c71e