Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb11e98fd2c6c3be…

MALICIOUS

PDF

36.2 KB Created: 2021-06-27 17:54:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ced76a761ee16b281f09ec27e23ae75d SHA-1: dd6da0c5514188fbc7aa4ca3d13fbc8ab7181592 SHA-256: bb11e98fd2c6c3bed6708fc4b468f84f8fa1cdb7c8c088bd8f5d68f9bcf78208
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 0.9980

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 http://netcdn.co/app/431946152/free-hack-for-robuxs-on-robloxs-game-hack PDF link annotation
    • https://imagetravelnepal.com/userfiles/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coins-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-stuff-for-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.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_off00003578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3578 22892 bytes
SHA-256: 78289254b014a192540e5e0b5a4942a15fa731d784c26567562ba4673855da1b
font_01_sfnt_off000068dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DD 18960 bytes
SHA-256: be722023d8c9419c3f01b816d80382c88938eb5f48c6b83b7dcd2e190d27955d

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