Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa19cba6473229e1…

MALICIOUS

PDF

41.1 KB Created: 2021-04-26 17:52:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a8265158f331b6f531ed430b847e612e SHA-1: e3de96becb51216e626c92d1a09b8cb82a95c604 SHA-256: fa19cba6473229e125482a4f9c081ac9b8e98ac2c2f9475d6498c693892a7793
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as game hacks or generators for Roblox. The primary redirector URL is https://netcdn.xyz/app/431946152/hack-week-for-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to further malicious content or downloads.

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/hack-week-for-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/scpninetailedfox-mod-cheats-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/best-free-avatars-on-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/como-hackear-roblox-para-tener-robux-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-robuxapl.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/10-dollar-roblox-card-codes-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-vip-servers.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacking-roblox-items.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-rewards.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/boku-no-her-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-find-out-who-hacked-you-on-roblox.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
font_00_sfnt_off0000438a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x438A 25268 bytes
SHA-256: 1ce3ca804408e262a789e00111820f964484d062957f971c7db03f8a939a3f2e
font_01_sfnt_off00007e09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E09 18544 bytes
SHA-256: 5474c90da09794b326d0e95d6c849041a17de2daa13a4f93bfe40cb4c40c3f1b

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