Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a7605208353d37…

MALICIOUS

PDF

36.1 KB Created: 2021-06-27 17:46:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 00939f26298db926df36a0210bd5bc51 SHA-1: 4b519fd9eca0b47d7e473b535ba050eabeb763dd SHA-256: b2a7605208353d374014fe3deed74f94a4409b20f19ed424acc51245dc682e5d
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/auto-clicker-download-roblox-bloxburg-free-game-hack PDF link annotation
    • http://www.donjastubica.hr/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-spin_GM406889139.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/pubg-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • https://www.donjastubica.hr/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-catalog-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000033e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E9 22548 bytes
SHA-256: 5ad124a4388471a60030bad1de804844762497f51b2501b0046ac5fa2ec38759
font_01_sfnt_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 19688 bytes
SHA-256: 3ad7cb199b86378de3a031a0e073c2e3efb4a9378fefcff478b289354da675ac

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