Malicious PDF — malware analysis report

Static analysis result for SHA-256 724ff654a7ec9986…

MALICIOUS

PDF

45.0 KB Created: 2021-06-07 20:11:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 27493c9803f0af39e2123cc8ac79a57a SHA-1: 4443440e31a0d0b68ae3f35662c38f1f33148939 SHA-256: 724ff654a7ec9986e20360b272928c66bd76d9baef076601a8588956048c4763
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure related to game hacks and free generators to trick users into clicking a link. The link leads to a fake CAPTCHA or human verification prompt, a common tactic to encourage users to download further malware or engage in malicious actions. The document's structure and embedded URLs suggest it is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/eclipsis-roblox-hack-game-hack PDF link annotation
    • http://dieter-sauter.com/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://dieter-sauter.com/images/for-creeper-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/www-rubux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-more-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
stream_004_off000051a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A0 25432 bytes
SHA-256: c2d41beeb43ce6d383a13dfe5c8c2f994283c9b77ac45d67ae0a8cd84ae7e333
font_01_sfnt_off00008cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD4 18480 bytes
SHA-256: 3298828ef0deb65a28d409dec338416f8d5311a5fe5eb70bff08ed830002fcb0

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