Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8efcf69294323b…

MALICIOUS

PDF

51.1 KB Created: 2020-09-07 22:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5baebbb9ad872e10b13970f30689c606 SHA-1: 50bd77cc2c82c1bc615fc416a2da13ab49a0ba79 SHA-256: 3a8efcf69294323b835555e7bcaddad971ccf0abbf3f1d0835796b0b7abb18c3
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to an application form and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a broader campaign to distribute malicious content. The SE_DOWNLOAD_BUTTON heuristic further supports the lure-based nature of this document.

Heuristics 4

  • 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.
  • 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
  • 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=bed+cet+application+form+2019+official+website
    • https://static.usrfiles.com/ugd/b8c837_c8b5fbe519dd4d489f77557477427c74.pdf
    • https://static.usrfiles.com/ugd/b8c837_adcf0e3d827b45dfb0d27593129c00a1.pdf
    • https://static.usrfiles.com/ugd/917232_88f31724b6d3412091c6169affc7e97d.pdf
    • https://static.usrfiles.com/ugd/9df9d6_57a95ec3635f4314b708a071ccf55f5c.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_f8407affe0e54c7485573c07fd571d73.pdf
    • https://static.usrfiles.com/ugd/f0f215_dd061ef7874844f989d800c579e1951b.pdf
    • https://static.usrfiles.com/ugd/72b0e7_beb8fde3d6b84e209ee6f5f3a2bf2de9.pdf
    • https://static.usrfiles.com/ugd/b73feb_988aefb552904d3495c08a4ea7a480f8.pdf
    • https://static.usrfiles.com/ugd/6924eb_b10365a7870f4a5ab607452987544c1d.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_18074bb4f5234429ad4db97306433f44.pdf
    • https://static.usrfiles.com/ugd/b910ae_25a8042e1b814b37a1494a1b142dd1e8.pdf
    • https://static.usrfiles.com/ugd/9df9d6_8c82dcd9c7c840558ecf239c8c4d0dc7.pdf
    • https://static.usrfiles.com/ugd/740d8c_a16660ebfe8243e9b182ae61efb2e3ea.pdf
    • https://static.usrfiles.com/ugd/229b11_060a4f134c69470e8142af63b83c0919.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_off00007a13.bin
7d46b26d7cd54f3b953a7fc2de7d822930981867d5626f82ce34c7b4b78f79ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A13 5852 bytes
font_01_sfnt_off00008de4.bin
c830bec37385a54d07c8a47cc3517cda73dcdf5e19d841be7560fbbba130b6df
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE4 10408 bytes
font_02_sfnt_off0000b150.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xB150 4324 bytes