Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa0fb1ba8a0347f…

MALICIOUS

PDF

34.1 KB Created: 2021-07-09 11:01:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1e9be08adc5aa4c80ac9b31686ce8eb SHA-1: bb15929989983b27141cc5c89aedd04189b71a68 SHA-256: 5fa0fb1ba8a0347faaf232dd741a1e55360446c7104c2ede3abad30a93acb113
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using the promise of 'Robux Hacks 2021' to entice users. It contains an embedded URI that redirects to a malicious website, likely to download further malware or conduct phishing. The ML classifier strongly supports the malicious nature of this PDF.

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/431946152/robux-hacks-2021-game-hack PDF link annotation
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/code-roblox-free-items_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-roblox-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/get-free-easy-robux-today_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/hack-formum-roblox_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-pass-hacker_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/free-robux-promo-codes-2021-may_GM431946152.pdfIn PDF document text
    • https://sf.nationalbreedingcenter.bz/ckfinder/userfiles/files/coin-master-free-spin-realme-products_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_off00002f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8D 21828 bytes
SHA-256: afe446507f515ea12814d7514fbffdbef05ba74de36292dbe7ea4de7e28b6b22
font_01_sfnt_off00005fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 19124 bytes
SHA-256: 5acc4cb5eca619de91ddb47cdc70e87d550a63f617f877071c9ac47b9f2637f1

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