Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09d0ed6c8e40cb8…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 01:16:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cb2c1d3947bed45e9ab2184f979cad2a SHA-1: d73d73c05d44877f18b90bbeec1a2d46faafb036 SHA-256: d09d0ed6c8e40cb8119d9977e2b6f23903fe4d4f7619bc05f3cb318d50b7e471
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/479516143/free-minecraft-pe-server-game-hack PDF link annotation
    • http://www.donjastubica.hr/files/roblox-free-robux-genorator-2021-no-suvery_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/glitch-foe-free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/build-and-survive-sunbeam-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/eggman-egg-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-hunter-x-hunter-lvl-hack_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-robux-without-any-human-verification_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/hacks-for-adopt-me-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/does-cheat-engine-work-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/mcpe-master-hack-unlimited-coins-apk_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_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 22304 bytes
SHA-256: b838f95edcf833add4c125b0c1c37cc716b39afb23cd499c21cea3e700c55485
font_01_sfnt_off00006085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6085 18124 bytes
SHA-256: 44cbab3028a3df9bc9841a4d80e53babf0d09cfa62fa83b1fc03cf8d1ca0a26e

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