Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd46372e821ee0b…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 05:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7f58c827a48db7b852e504040993661 SHA-1: 3ffd4ebaaadef8e70d06d6ec19cad82db5f9ac49 SHA-256: ddd46372e821ee0babda82850bd2a67d78a93b6ff27dd5e1169b7e5be7893c24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, that promise game hacks and free currency. These links likely serve as a lure to download further malicious content or lead users to phishing sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/roblox-free-rubox-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-2021-no-human-verification_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_off0000516f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x516F 28768 bytes
SHA-256: 5a2db4f7d8f2f822af7cd628e5fe000edc0f93f2daab94a2dacb5fde5dedefd7
font_01_sfnt_off000091e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E1 18088 bytes
SHA-256: 03c92d59c548fbfdae08874221752d30f8caaed88781636bf7d18542e7c5fe52

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