Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ba1e371ca7a9e6…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 16:32:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 95a8e58a3824ab9f8d8b199099c8832f SHA-1: 4031cf24cd915a6b7ba7153889c4fd611c2b3003 SHA-256: 84ba1e371ca7a9e60ecce29fb08bdcbe17bf9024b64df02c73b8b9bedbbf3d33
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs suggests the document is designed to redirect users to potentially harmful content or download further payloads. No scripts were extracted, but the overall structure and heuristics point to a phishing or redirection attack.

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/any-roblox-hacks-for-mac-game-hack PDF link annotation
    • http://bressanassessoria.com.br/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-code-generator-no-download_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-body-part-resize-hack_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/como-hackear-cuentasen-roblox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-so-sick-free_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/jailbreak-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/where-to-get-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/mega-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/aaroboy-10-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-real-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-turn-into-super-saiyan-roblox-no-hacks_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-shirts-on-roblox-2021_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_off00002efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFC 22564 bytes
SHA-256: 5486120b434e6de770ca756469e51c6ae7f47948333faf39f1aaa5c05ed99deb
font_01_sfnt_off00006181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6181 19196 bytes
SHA-256: ccf246f48d9826b46024de14748462086af5a89fd74093935d0cd6bc6f1b24dc

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