Malicious PDF — malware analysis report

Static analysis result for SHA-256 3802a28be4fe1600…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 05:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d7151bc8c073659f6484c6b6c30732a SHA-1: d6abea90c1766c2673d52591cec07f5699d1c5e0 SHA-256: 3802a28be4fe1600616f9b5e94235c8ac57e1c22e7200239d372d85e82aa7013
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting a "Coin Master Hack Tool". The presence of a visual download button and the overall lure suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a malicious intent to redirect users to exploit or scam pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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-hack-tool-v1-9-download-game-hack In PDF document text
    • https://tecturatw.com/image/data/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/robuxhub-net_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • https://tecturatw.com/image/data/files/how-do-i-get-free-robux_GM431946152.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_off000050bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BD 24304 bytes
SHA-256: 6e8ba2c0c006c10ca47846fcd01cc6af6ab33d0b5444846aa3720ccb9f468368
font_01_sfnt_off000087dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off0000917d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917D 18700 bytes
SHA-256: 9cf5927f48de073d536566d00352c45da2cff51891e4c509e4c52fd42c0e4c7a

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