Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b5268d5516fb6b4…

MALICIOUS

PDF

44.4 KB Created: 2021-05-17 12:41:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 334b982f4d73164dcfa053b5c3c27781 SHA-1: ca7ff2a3808bba1b65af92be417f3bda8f7add0d SHA-256: 3b5268d5516fb6b44b4a03db95cd15abc34c4e8ef3fb6524169c8065a18f3cdb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious content. The ML classifier also flagged the document as malicious with high confidence. The document body and embedded links point towards lures related to game hacks and free items, a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/how-do-i-get-minecraft-for-free-game-hack PDF link annotation
    • https://newenglandafs.com/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/robux-link_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-arsenal-hack-script-pastebin_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
font_00_sfnt_off00004a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A54 24400 bytes
SHA-256: 586ad36ca5ee2f7c82577889d77c49b358d38fda265ef578c1889598159bb5e0
font_01_sfnt_off00008114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8114 3068 bytes
SHA-256: 0a91bc601ea022ebd8e3d2f41a62c3c291aaa03c5a0de9957a800a4c346dcdcb
font_02_sfnt_off00008ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA4 18044 bytes
SHA-256: 8adf8c493cf7b961d8151eaa7b2e31490a9d93b7fc863b831128d5e31b20427f

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