Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07531b1f92bda82…

MALICIOUS

PDF

43.9 KB Created: 2021-05-17 03:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b8ccf7fca393408bdf27d3048074332c SHA-1: 59034a8034b10882af654a689318ae6398d7946e SHA-256: e07531b1f92bda827dfd178485e89056853c9ab308e59e979bde2a585a609bd1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are structured as SEO-optimized links pointing to other PDF files, suggesting a link farm or content aggregation tactic. The primary URL, https://netcdn.xyz/app/406889139/archery-master-3d-hack-unlimited-coins-cheats-game-hack, along with the numerous other links, indicates an attempt to drive traffic to potentially malicious or unwanted content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/archery-master-3d-hack-unlimited-coins-cheats-game-hack PDF link annotation
    • http://neltalen.nl/images/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://neltalen.nl/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://neltalen.nl/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://neltalen.nl/images/roblox-hacks-2021_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_off00004bec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEC 26032 bytes
SHA-256: fdd89780bde70a6088a1af15be1f5e52b75242e18c260ab3743474cfb2306f44
font_01_sfnt_off0000875f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875F 18928 bytes
SHA-256: e4446fb8917a5d541b4c62e11a4e73ebabb77927bfa37d18c91cbf5918b93b3d

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