Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d39858c90309bd2…

MALICIOUS

PDF

44.8 KB Created: 2021-05-11 05:30:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6117bfb9b3980cf648dc0515f98b81e3 SHA-1: 9f49d91e0733c518641a6719712c881391bdc72d SHA-256: 1d39858c90309bd2bee9f7f934d674e7f1a8815d663231b6eda5df3e7de6929e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and a visual download button, directing users to a URL associated with malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains references to game hacks and a URL that appears to be the primary payload delivery point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/479516143/minecraft-hack-client-1.8-9-game-hack In PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.bpdbali.co.id/new/public/ckfinder/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5B 28552 bytes
SHA-256: 6c83c8e5a3969196260e30673e028a18615f223b520ceda6add7ff0008905589
font_01_sfnt_off00008cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF9 18356 bytes
SHA-256: 7146a4451d5a4af0805248e1a25bf748bd62d3cefbd8f089093f6989f2885b31

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