Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f6f9c3b13bb444…

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 19:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b289608e9102ade6ef15637fcac4328a SHA-1: d01a51064120c78ee9ae2db2913750abf6d76ed6 SHA-256: 52f6f9c3b13bb444ac6baea0bd99206e6681fddc64cc34ccf0cbd362ea991761
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/835599320/free-tiktok-followers-just-username-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-clothes-in-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-66-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-on-ipad-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-roblox-comment-passer-a-travers-des-murs_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-stuff-in-roblox-ios_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-omg_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-website-that-works-no-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-robuxzone-wordpress-com_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-asssassin-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/800-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-polygun-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-meep-city-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-hack-on-computer-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-its-free-know-your-meme_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.bbc.com/news/world-asia-china-46803909In 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_off000032f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F4 23228 bytes
SHA-256: f1bd5e358f433e5e57ef9c4819cde081ab14287a4ba2be1d70b3f4a11739a028
font_01_sfnt_off00006776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6776 18960 bytes
SHA-256: 5b52df88460ba1a2aeb461916a0710a20b244e7fa02bf5160ee9eafc63f27171

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