Malicious PDF — malware analysis report

Static analysis result for SHA-256 f013350c93fa624c…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 07:46:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 82238c58bd27448535e6f6ef98f3e8f8 SHA-1: a78d210ba370c9d40fe946e192c02992233c5edb SHA-256: f013350c93fa624cff36f083ea7373472cf8a72b5ad2a5fc259750d099655fc8
102 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 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/the-laughing-unicorn-free-robux-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/pastebin-hack-robux-free_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-heads-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-full-version-free-download-apk_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-scams-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-and-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-free-gift_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-robux-for-fre_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-robux-2021-on-ipad_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-pin-numbers_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-android-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-de-como-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/games-on-roblox-that-give-you-free-robux_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_off00002f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6E 22520 bytes
SHA-256: f73f101652679badb0b36d6e4ecddfc2fe40527e6816a43714fad43fa65eb57e
font_01_sfnt_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 19004 bytes
SHA-256: 0d16885dc25890e839aceac639ac7ffd5bc216644ad0149eff4b9a642006d31e

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