Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf8226943b1b130…

MALICIOUS

PDF

39.2 KB Created: 2020-08-31 07:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 587085235c6b476840331b1be43247c1 SHA-1: 551665067d45d97bf65c12b32ce0a6b3ae38ecdc SHA-256: adf8226943b1b1303f35373c0b6c85abec57e76c5547787dbaafbeb083a4491b
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/wix?keyword=d+d+scholar+s+pack'. Additionally, the document exhibits characteristics of a password-protected archive lure, suggesting it is designed to trick users into downloading a password-protected file. The presence of numerous external PDF links further indicates a link farm strategy, likely to obscure the malicious intent. No scripts were extracted from this sample.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/wix?keyword=d+d+scholar+s+pack
    • https://static.usrfiles.com/ugd/b8c837_65935f0f44a7452cbeb395df8629532b.pdf
    • https://static.usrfiles.com/ugd/917232_e33f9ebee0834acaba8927e24a29f208.pdf
    • https://static.usrfiles.com/ugd/d63aaf_4c85357523004303aa7f8b966be083a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_68d2c8855b2a4a2b8bc2f4f02c9fc655.pdf
    • https://static.usrfiles.com/ugd/61f964_30aaaf3ffce24e9c97f9cb4649e96942.pdf
    • https://static.usrfiles.com/ugd/b8c837_91e22bda275a4488aca5667fd10a698b.pdf
    • https://static.usrfiles.com/ugd/856cea_df93a160ed114a4eb7b77cd31f572d63.pdf
    • https://static.usrfiles.com/ugd/b8c837_935f39ae9fc64dfdafd45904ef9bd08c.pdf
    • https://static.usrfiles.com/ugd/1decf9_3f4ed8848f8f4ae796343b9bb42801c3.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/33222393307.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/isunshare_itunes_password_genius_reg.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2501/files/zipugunafomiri.pdf
    • https://cdn.shopify.com/s/files/1/0436/4346/9974/files/rixadopadigogagi.pdf
    • https://static.usrfiles.com/ugd/b8c837_1392575240b14d89a4cb768ed99e1fc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_951a8be07acc42fcb0759543a8036017.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_off00005011.bin
7e50d6264ddb0027ede31d245281619d3c5a80c24f5d0fc3f6ffb3f1910f26ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x5011 4660 bytes
font_01_sfnt_off00005fe5.bin
c50bf824f302ecadb54c54182edc012a8a65002829e2b287e887605c6a409f65
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 9980 bytes
font_02_sfnt_off00008216.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 4324 bytes