Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76049e3239929b9…

MALICIOUS

PDF

41.8 KB Created: 2021-05-01 21:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: daffa3c03edf2600c418867b7e2335a5 SHA-1: 40f5593892471778e0af83c8741dc576f9cd2fbe SHA-256: d76049e3239929b9261e930ce0a9ef39f811ee4d26bd4a683430e4a44a88e818
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 0.9763

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/free-robux-no-human-verification-ios-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-robux-generator-witout-paying-or-doing-nything.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/codde-for-free-roblox-hats.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-play-online-no-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/descargar-roblox-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-30000-robux-pastebin.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-download-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-exploit-the-plaza-money-hack-get-10-billion.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/como-recuperar-cuenta-de-roblox-hackeada.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-skin-maker.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-jailbreak-hack-download-money.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000400e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x400E 24028 bytes
SHA-256: 54eb1a9ac0f45df75524568fa8348f72d3c53ce7b308fafa1ea6fae3afcd9d43
font_01_sfnt_off000075e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E6 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00007f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F96 18860 bytes
SHA-256: 1fd72f08e32f8dead579c7e00d20f4bb22a68d136568d5720778eb43d385a4cb

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