Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbc52a9077273fe4…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 04:59:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db5f909910905f4a6a1e659622408954 SHA-1: 02bdba854b90e082bad9d4b06a0d5375289707ef SHA-256: dbc52a9077273fe430d00427b575e0fc9d7d6167c9627b85c876b3fbe00ff605
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with game-related cheats. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-heaven-free-spins-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a redirection or download attempt, aligning with common phishing and malware distribution tactics.

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/406889139/coin-master-heaven-free-spins-game-hack In PDF document text
    • https://www.dahu-villa.com.tw/upload/files/robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/tiktok-editor-free-download_GM835599320.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-coin-master-links_GM406889139.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_off0000525a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525A 29680 bytes
SHA-256: 6cf23b19a1ab751a799180665dd97171526db9fc94e2b0ef2892add5f31eeef7
font_01_sfnt_off000090e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90E7 18000 bytes
SHA-256: 6cee86ead4aeee921a3b6e14ddf6eb594f4a141ca364aa42231f8e25adb97f4a

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