Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc51c6d566ae33bb…

MALICIOUS

PDF

33.9 KB Created: 2021-06-28 18:05:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 172aca887d5e8b9741215df19bd43171 SHA-1: 6d76283a4b49a6de451d329fc967b3fae2eade57 SHA-256: bc51c6d566ae33bb255e107e1d60c9b0fd0ecf068d1f75a76e769079dcfa30ce
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.co/app/431946152/beyond-roblox-hacks-game-hack PDF link annotation
    • http://www.thecoffeebaron.co.za/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/script-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/mod-menu-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-rocket-fuel-for-free-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-hack-roblox-lumber-tycoon-2-2021_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-daily-gift-free-spins-and-coins-link_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_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 21740 bytes
SHA-256: 90b2348e2ae0d3e8f74fd2b4cfe62aefc2aa77da70c2997c24ad57342ac95eba
font_01_sfnt_off00005f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5D 19012 bytes
SHA-256: 5a99856f67a619e96996799f7f963d4cfd32ded1361623f16aecfee8b77f496c

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