Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b602d09c4bfe0b…

MALICIOUS

PDF

43.3 KB Created: 2021-05-14 06:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2df0ddd8ba3318f000d4c30e15bfd87f SHA-1: 8f3e48fe25f17c83e50f91f183167d4bf5cafa3e SHA-256: c6b602d09c4bfe0b90447dc1f259681abcaff1fd0c57aecf644ac5a1312ad485
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering game hacks and free currency. The document body, though heavily obfuscated, contains references to 'update-coin-master-free-spins-game-hack' and other similar lures. The primary attack pattern involves tricking users into visiting these malicious URLs, likely to download further malware or engage in scams. No scripts were extracted, but the presence of embedded URLs and the nature of the lures strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/update-coin-master-free-spins-game-hack In PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://buanaabadii.com/ckfinder/userfiles/files/roblox-login-hack_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_003_off00004e65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E65 24944 bytes
SHA-256: 84bfe54bae3b906acb86ce5d67fb6ed1fd1f0a357ad763fdf2075c42c6628280
font_01_sfnt_off00008701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8701 18244 bytes
SHA-256: 27c09eb221378defc267f78e32d3c41c850d93aee8517152fbe062b354dcc493

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