Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8067125a4f26c93…

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 10:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7c182f4f59fa1201a5beb268955b7b34 SHA-1: 264543fa3ef40ae2f850cf7d2a45d74a483f38a2 SHA-256: b8067125a4f26c93a6f494050925f7ff7ac550bae12323eb5d2547ee6e8fec26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one specifically identified as a lure for 'free generator / game hack' content, which redirects to known malicious infrastructure. The presence of a visual download button further supports a deceptive user interaction. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

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/roblox-password-hacker-game-hack In PDF document text
    • https://www.fhccu.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.fhccu.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fhccu.com/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://www.fhccu.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.fhccu.com/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://www.fhccu.com/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.fhccu.com/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.fhccu.com/images/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://www.fhccu.com/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.fhccu.com/images/free-robux-no-human-verification-no-survey_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_off00002a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A13 22080 bytes
SHA-256: ed3c673b8abf7976ab05eb968c0ea9f525bce1a1c1b184d8b14faf3736a75548
font_01_sfnt_off00005b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B24 18860 bytes
SHA-256: 4a649625507d387f19787b195785a71baad3d56deacdbc8c563703119e3c92b4