Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb63fd8c1f22cca3…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 17:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6593390c3b0f08246f87d42db22d4f5c SHA-1: 3c129bfb48541a8a5fcf6ef12b67960271686be5 SHA-256: eb63fd8c1f22cca322ba7789c22563622cc09c33bb4e9fe39237e38121372aa0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a website offering 'coin master hack' and other game-related cheats. This lure, combined with the ML classifier flagging the PDF as malicious, strongly suggests a social engineering attack. The embedded URL is the primary indicator of compromise, likely leading to a site that hosts malware or exploits.

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/coin-master-hack-ios-12-game-hack PDF link annotation
    • https://www.donjastubica.hr/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/why-can-i-not-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-2021-robux-free-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/free-roblox-account-paswords-with-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-run-roblox-hacks-on-school-pc_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/murder-mystorys-roblox-knife-hack_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/nice-roblox-games-to-hack_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_off00002d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D60 22636 bytes
SHA-256: 77e1eaeefce2c65ae73e60f7b2e7094c45d3ecbe895cc3d1ca0536ae7f02d0b5
font_01_sfnt_off0000600d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 18232 bytes
SHA-256: c9eabdb7d8b452980fc992ffbb4cf4140e100a7cb8043d719b8152402848e971

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