Malicious PDF — malware analysis report

Static analysis result for SHA-256 737e482a8c29461d…

MALICIOUS

PDF

32.8 KB Created: 2021-07-19 18:30:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49df7e98946a9f7048594b153fb8de20 SHA-1: 7aabdfaf8b278f604e6f8b85a87f027a4d2fcf2e SHA-256: 737e482a8c29461d1f9fbaebeb9b6853310e72668c792088ed56ec4f49a81e77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action button designed to trick users into visiting malicious websites, specifically advertising "free Robux" or "game hacks." The primary link directs to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded links strongly suggest a lure for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/free-robux-no-human-verification-or-survey-2021-game-hack In PDF document text
    • https://bertaluzorganiccosmetics.com/images/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://bertaluzorganiccosmetics.com/images/robux-hack-me_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_off000028cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28CB 22096 bytes
SHA-256: a058cc2e1172ba2b8c9c4891833b54457d0a77debf203056a899e9737317a2f2
font_01_sfnt_off000059be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59BE 19744 bytes
SHA-256: 046dde0b98b0e350a9b3d039bd59d00ed9dd60c59f8a340029bdaeca07b7a61f