Malicious PDF — malware analysis report

Static analysis result for SHA-256 604952edd234f7fc…

MALICIOUS

PDF

48.2 KB Created: 2021-06-06 23:29:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 880470653214842494265955f580a1a6 SHA-1: 58bf3ee8e2fc7205eabe7e22d97766c19c34e6c9 SHA-256: 604952edd234f7fc74bc42fc494b394622ea3b50b01eb9972cd64f7377c68254
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free spins for popular games. The primary lure URL, https://netcdn.tw/app/431946152/how-to-user-cheat-buddy-roblox-game-hack, is associated with a redirector designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/how-to-user-cheat-buddy-roblox-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51D4 24568 bytes
SHA-256: 54b23a1f54830eb63fa3a6202be6152b89b41cf038b5b11ce86065d488f9d616
font_01_sfnt_off00008a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2C 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000096d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96D4 19128 bytes
SHA-256: 8d03a8b06593df2b8797d4b31335d770dc8f3da16d0c9261c43a2db30f6b8557

Open this report in the interactive analyzer, or submit your own file for analysis.