Malicious PDF — malware analysis report

Static analysis result for SHA-256 febc993c7d74f5ea…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 21:54:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a4c85c25838659edacb9589369328d71 SHA-1: 106b14270e2c59ff1bb269365898c6ab26042417 SHA-256: febc993c7d74f5ea308853524424d676480ac4be570d9495a7db8acf14af1cf9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a call-to-action phrase, suggesting a lure for users to download additional content. The ML classifier strongly flagged this PDF as malicious, and the presence of URLs related to game hacks and free currency indicates a phishing or scam attempt. No scripts were extracted, but the overall structure and content point towards a social engineering attack.

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 http://netcdn.co/app/431946152/youtube-how-to-get-free-robux-easy-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-use-cheat-engine-on-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-como-tener-robux-gratis-en-menos-de-10-minutos_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/earn-free-robux-2021-february_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-become-a-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/ban-script-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-gun-script-hack-r15_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-best-free-catalog-items_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-tops_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-hack-accounts_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-hack-no-inspect-and-element-2021-not-patched_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-how-to-get-unbanned-with-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/karina-roblox-zombie-free-zones_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-accounts-for-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
font_00_sfnt_off00002f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 22884 bytes
SHA-256: a85f629feba07ad3839ad43aa723bec6f0770ed91d6beb6cc9aea9d92fcb2f57
font_01_sfnt_off00006296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6296 19328 bytes
SHA-256: 9c53e6af6c37807c25aeafe48f47bd76249c8616ddeca06ff0bfa3bc5fb74d3a

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