Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ef2edf6276757f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 22:46:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 635c02196bbb2c75f59924cc049eb498 SHA-1: 043b3deb58e63a2add6ee6f6a251e7c751d4949a SHA-256: 75ef2edf6276757f2d54466b5fbbd44cf97fb021ab583304a2d357b8f644853d
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.tw/app/406889139/100-free-spins-on-coin-master-game-hack PDF link annotation
    • http://www.salwangurgaon.com/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/lemonaid-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/pokemon-go-free-7km-eggs-june-2021_GM1094591345.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-inspect-element_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/re-ghoul-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/why-old-roblox-accounts-and-free-items_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/earn-robux-for-roblox_GM431946152.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_off00003219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3219 23004 bytes
SHA-256: 8a3770971a7c91c889e1fabc58594e74bd16cddbb24bb72cadd70958b7e85e7b
font_01_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 18452 bytes
SHA-256: 19b9cdf123661413ad3df9058e2ff653a57f7ce1122fd87799700f91452dab37

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