Malicious PDF — malware analysis report

Static analysis result for SHA-256 175cb030362a7908…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 20:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d64976759d87c415e76ed3c6247d58af SHA-1: 5f0abb7f82a790015eab96174acb74f25bafe564 SHA-256: 175cb030362a7908105491102c24013da5193aaefaeb9d0b49a745871b403a98
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' or 'game hacks' for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a further stage of compromise or information theft.

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/479516143/minecraft-free-online-games-game-hack In PDF document text
    • http://www.flotom.at/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.flotom.at/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://www.flotom.at/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.flotom.at/images/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://www.flotom.at/images/minecraft-for-free-on-phone_GM479516143.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_off00002cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC7 22600 bytes
SHA-256: 5b572f855691116c5aac2614513ab040c33702be6d6569bb61b16bd5edda3ac1
font_01_sfnt_off00005f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F52 17900 bytes
SHA-256: 4b77619cba729584a62e96e7fd69b59749ae88ba583596c01091ec51b146d7ca

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