Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce833c1a8628e165…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 05:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 404b2c13d0932114d1c10ab8ddb8132c SHA-1: d499265c498f546f739066b2650859546d8deae0 SHA-256: ce833c1a8628e1657769bc462df894615d2410092b1509ce9c028e6731c75740
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 0.9796

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 https://netcdn.online/app/406889139/free-coins-coin-master-2021-game-hack PDF link annotation
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/free-script-injector-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.tradenextindia.com/uploaded_files/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000500d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500D 25364 bytes
SHA-256: 2d2bbbd95379e46e5b5e9c7ecdb210cd06f3ebf466366a692fd01fbba1ae2a8e
font_01_sfnt_off000089fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89FA 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000094fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94FE 19440 bytes
SHA-256: 0d5c9f31cdb1ba61bdce87ae4d4f25f0536a4462157c6c419d241b78d02673ee