Malicious PDF — malware analysis report

Static analysis result for SHA-256 14253accd76d8467…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 17:06:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b8cb48ef81e44e5af9ccc87b66894b10 SHA-1: 2e3053dfdb9cce29fc47a6f45bc9c9293ad35c1e SHA-256: 14253accd76d846799e065bbf35e8ae6dd529220740f831e0525f80dc3631f9d
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 0.9971

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/479516143/how-to-get-free-coins-in-minecraft-game-hack PDF link annotation
    • https://www.gvandenakker.nl/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/robux-online_GM431946152.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://www.gvandenakker.nl/images/free-daily-spins-coin-master-2021_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
stream_003_off000046c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C4 27464 bytes
SHA-256: 6253bfbbf00be12fb9c3189913940a7361426d58378ffd43dd1a6cde84737da9
font_01_sfnt_off00008559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8559 17872 bytes
SHA-256: 1b721abad2735a8fbe19a03a2bac086d9eea3fd34ae873613b34203f1596ee94