Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dadfaa714ebdbd7…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 01:41:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ef191add0086e6aabef08ced707572de SHA-1: d0630c3895a8c3af7505bd6b091382c8f5bf27df SHA-256: 4dadfaa714ebdbd7874c444dbf5adca68b9b9f579c6bc880eb6fdbd8c930e4a6
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 https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-2021-game-hack PDF link annotation
    • http://bestmaids.co.uk/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/simplysarc_GM479516143.pdfIn PDF document text
    • http://bestmaids.co.uk/images/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://bestmaids.co.uk/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bestmaids.co.uk/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.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_off000049af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AF 30764 bytes
SHA-256: 69bc647b6f0bb13f562ace0a632738b4fdb6cc71d1dcbcec244d3c10bd19ec50
font_01_sfnt_off00008964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8964 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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