Malicious PDF — malware analysis report

Static analysis result for SHA-256 218baaa9ff5982e1…

MALICIOUS

PDF

43.7 KB Created: 2020-08-29 14:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cebc93fd33fca578ab18dcbddbb34d87 SHA-1: 66e1689f8fdb48f21521d478b825a10c0ceff89d SHA-256: 218baaa9ff5982e1056282d5f53bab61b6f1335c5160ed82eedb00333d3bc078
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566 Phishing T1059 Command and Scripting Interpreter

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=d3d+device+being+lost'. It also includes a heuristic for a security bypass instruction, advising the user to disable antivirus software. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the phishing attempt.

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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.cc/wix?keyword=d3d+device+being+lost
    • https://static.usrfiles.com/ugd/b8c837_d5fc71bab1c54a5db60c1976060763a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_132628c7ef364e36a9117a681bf6acdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_98442a77c400426691c92ea2cde006ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_6903746f92c34522a1c43f30543d62ce.pdf
    • https://static.usrfiles.com/ugd/353d00_6003a5dcbf7e46c8a6f109f138cd03ce.pdf
    • https://cdn.shopify.com/s/files/1/0433/5573/4166/files/kazitide.pdf
    • https://cdn.shopify.com/s/files/1/0435/4388/8023/files/vetepejesifamonoxezobi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/using_critical_theory_lois_tyson.pdf
    • https://cdn.shopify.com/s/files/1/0432/2476/0488/files/sidesowebabapafidufabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3158/4153/files/cervical_cancer_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/bifabob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/kelumilobikemarij.pdf
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/sims_4_wicked_woohoo_mod_download_ps4.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_off000060a9.bin
4769b0662cadfce009e85824b93cb7cd0e14f1462ae9fc4d7cdf21c804bd94f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x60A9 4952 bytes
font_01_sfnt_off00007199.bin
c7420e25971d2a967e5f1285a518b42d52b052945ad214a4c20ffeca0d4460c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7199 10076 bytes
font_02_sfnt_off00009405.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9405 4324 bytes