Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a062c05abc703a4…

MALICIOUS

PDF

40.8 KB Created: 2021-04-30 17:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 05ae639140f765ece995b2bbdd40e911 SHA-1: efccaceab450a985868e560ef9190b4b0eb8ef68 SHA-256: 5a062c05abc703a47dc99b6ecf144e616d464b50da050488f89c0909c8cde350
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • 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.
  • 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/431946152/brick-cars-roblox-cheat-codes-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/install-roblox-free-online.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-para-atravesar-paredes-en-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/builda-a-boat-for-treasure-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-with-tampermonkey.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacker-names-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-apk.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/774-hack-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-cheat-engine-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-now.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/what-is-the-speed-hack-code-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
stream_003_off00004247.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4247 25800 bytes
SHA-256: 941d76071dbbbff5b077c9c69b002dc1c22cded233906be85e0960f1dd8cd7f4
font_01_sfnt_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 18748 bytes
SHA-256: 8653e80a292efd48dac39d02123b19f0c43e8907eac6682d8d524455eb7a1e23

Open this report in the interactive analyzer, or submit your own file for analysis.