Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84e6f2a0ddafce0…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 00:44:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8308aa8158cabe5d4569b62640b124e3 SHA-1: 10e0450f9f5e33b7f033e0749e81503943fec53d SHA-256: e84e6f2a0ddafce02909ab682a28b43c7a7120d344911e3ea6c72ae2b781dfb8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which appear to be part of an SEO link farm. The primary URL, https://netcdn.xyz/app/431946152/how-to-get-a-refund-on-roblox-2021-game-hack, suggests a lure related to game refunds or hacks. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links indicate a malicious intent to redirect users to potentially harmful content or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-get-a-refund-on-roblox-2021-game-hack
    • http://elearnfactory.com/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://elearnfactory.com/images/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://elearnfactory.com/images/hack-coin-master-no-human-verification_GM406889139.pdf
    • http://elearnfactory.com/images/coin-master-links-for-free-spins_GM406889139.pdf
    • http://elearnfactory.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://elearnfactory.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://elearnfactory.com/images/rape-simulator_GM431946152.pdf
    • http://elearnfactory.com/images/bloxpink-free-robux_GM431946152.pdf
    • http://elearnfactory.com/images/free-robux-no-verification_GM431946152.pdf
    • http://elearnfactory.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://elearnfactory.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://elearnfactory.com/images/free-robux-no-human-verification-generator_GM431946152.pdf
    • http://elearnfactory.com/images/coin-master-spin-hack-trick_GM406889139.pdf
    • http://elearnfactory.com/images/roblox-sexually_GM431946152.pdf
    • https://elearnfactory.com/images/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://elearnfactory.com/images/free-spins-on-coin-masters_GM406889139.pdf
    • http://elearnfactory.com/images/minecraft-free-download-apk-softonic_GM479516143.pdf
    • http://elearnfactory.com/images/is-minecraft-dungeons-free_GM479516143.pdf
    • http://elearnfactory.com/images/united-gaming-net-coin-master-hack_GM406889139.pdf
    • http://elearnfactory.com/images/minecraft-windows-10-mod-menu_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048f6.bin
762e3b16f8acec2f04b7e89bcebfc2ec4bd1af2f61256fecaf31cc02318aedb3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F6 24516 bytes
font_01_sfnt_off000080c7.bin
0b2b543da48f0b4768de5070e2e01aa670dd6acf1529f0922c00d776e6787c6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C7 18768 bytes

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