Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afa4f51838b3215…

MALICIOUS

PDF

153.8 KB Created: 2020-09-06 13:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 554e85667b98e145ba29f01a5e3b7c58 SHA-1: b9a65e5460ae26e89abc57e7a882f80ac19dc0bc SHA-256: 4afa4f51838b321593e8f5bdbe80a440ba7968ed997c09407960aaf1451e95ef
68 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated' or 'action required within 24 hours'. The primary IOC is the malicious URL which is likely used to deliver the next stage of the attack.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.club/wix?keyword=idsa+guidelines+for+crbsi
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/xujipuluj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8993/7055/files/acupressure_points_chart_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/xugubekokukofuzabu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/5246702685.pdf
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/19625456466.pdf
    • https://cdn.shopify.com/s/files/1/0430/8870/7733/files/allen_test_series_for_medical.pdf
    • https://static.usrfiles.com/ugd/805d2a_775841f599754993bc5bc1cf9be6d70f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7807bcadfb849dea0642997cd7616ff.pdf
    • https://static.usrfiles.com/ugd/87d215_93550d1c8849416ba8f31b677d33a879.pdf
    • https://static.usrfiles.com/ugd/46429b_fc2a3bef5d0d4ea699c2e8c163010d2f.pdf
    • https://static.usrfiles.com/ugd/9c43ec_9b3bb809f6a040489bb77d10ccd8a688.pdf
    • https://static.usrfiles.com/ugd/3826db_728b8b7f892c426c834833079888132a.pdf
    • https://static.usrfiles.com/ugd/67e251_d74cbc75da7b44c68d4d681da5e52b3b.pdf
    • https://static.usrfiles.com/ugd/948cea_28db043e825e4d87aff420c5ebafe0df.pdf
    • https://static.usrfiles.com/ugd/fd3290_3bff5a7251464132ad3dde2adb200ea5.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000200b8.bin
39467d8c6a6c10b36cd5343d3d77df30f8169318f884106ea48a799bd6001103		 pdf-font-stream PDF embedded font (sfnt) at offset 0x200B8 5264 bytes
font_01_sfnt_off000212af.bin
b7e099b6bd438513965b67e5ae5b3148e94531ffb9844f55bd13d8b97bb248aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x212AF 14940 bytes
font_02_sfnt_off00024198.bin
28d08771a635cfb29f7c95b78ed7ad78d9398d4a9f7085e04be07c0dd082242a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24198 16208 bytes

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