Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea83d5cff4bf4c24…

MALICIOUS

PDF

39.9 KB Created: 2021-04-28 09:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d221440b6515689eec86a541283f5e7f SHA-1: 71c1a1de4f18e455ae2c7e3646497354827f8729 SHA-256: ea83d5cff4bf4c243d0856f9043ec4ba3ea37dceb72b5c2841494a1751870cf5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "Roblox hacks" and "generators". The primary malicious URL identified is https://netcdn.xyz/app/431946152/injector-de-hacks-roblox-game-hack. The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or exploits. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/injector-de-hacks-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/nuevos-cdigos-de-roblox-de-hacks-jailbreak.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-sans-verification-humaine.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-code-21-01-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-on-ipad-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/unfair-roblox-cheats.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-inspect-element-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-100-000-robux-for-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/secure-payment-with-roblox-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/dragon-ball-online-cheats-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-the-roblox-builders-club-free.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_off000040a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40A3 24436 bytes
SHA-256: e12e6d978189963dcf9b89ebdb0e4a7491f9a519c21b6e7a3624451c16bfb6a1
font_01_sfnt_off000078bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BF 18640 bytes
SHA-256: 3d922fd9ba09abc0eb9c6ec09f6245029a80406f84ffd5acfa85939d9c90aa19

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