Malicious PDF — malware analysis report

Static analysis result for SHA-256 83abec21446c6186…

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 12:29:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e80ea14e6f9060a4c0025c89604c07a3 SHA-1: cd4925e391d73f43da3dd478b76833cce4509a57 SHA-256: 83abec21446c6186e1a42cc9f9b16b2becff9deffa397489925d21bd404a573a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a lure for free game currency ('Robux') and game hacks, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the PDF's content and embedded URI point to a social engineering attack. No scripts were extracted, but the primary attack vector is the redirection to a potentially harmful site.

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/free-points-for-robux-game-hack PDF link annotation
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/http-rtrustpro-ssd-k-roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-1-get-free-robux_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-hack_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/como-tener-robux-gratis-en-roblox-2021-sin-hack_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/where-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/adfly-hack-robux_GM431946152.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://penanggulanganbencana.denpasarkota.go.id/new/public/ckfinder/userfiles/files/chisel-and-bits-mod-pe_GM479516143.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_off00003431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3431 22208 bytes
SHA-256: 73c5ea499b3ef0d336caa02c3aeec32b1f8d7bd2f2c184259ddaab9c7c407598
font_01_sfnt_off00006538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6538 19092 bytes
SHA-256: e3fc0c23d859b6dd70331c9bf0dde038afd6162830101c8e078eb305fce1dc74

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