Malicious PDF — malware analysis report

Static analysis result for SHA-256 976f73083892aaba…

MALICIOUS

PDF

45.1 KB Created: 2020-08-29 12:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bfd6e148127df667a0328857326c31c SHA-1: d954d45dc35be9067f7b79394ef0e744d3d55eae SHA-256: 976f73083892aaba0cc596767f94ba65368de7dc1640d5186be027624b62aaf5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=leyes+de+newton+1+2+3'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. This suggests a phishing or redirection attempt to a malicious site.

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.
  • 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.
  • 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.com/wix?keyword=leyes+de+newton+1+2+3
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/aufzeichnungen_aus_dem_kellerloch.pdf
    • https://cdn.shopify.com/s/files/1/0454/8486/7736/files/excel_free_timeline_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/31473488056.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/ruviwobajavu.pdf
    • https://static.usrfiles.com/ugd/b8c837_90cbdfe5e4e44502bfc36b782c597e03.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a4153a7e19d47fa837278ad535180e7.pdf
    • https://static.usrfiles.com/ugd/10b11f_7bacbd32d22f492f8bb8a64f1830b7ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_de4e80c054064e80a40c774c694587f4.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/insect_field_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/quotes_on_why_school_uniforms_are_good.pdf
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/36751542478.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8357326041.pdf
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/patonamabemaj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000729a.bin
6eb6a263ed2b9486ae3165a1f670bcaa2a11073bf4a563af55d9b1e702b8d65b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729A 4964 bytes
font_01_sfnt_off000083b6.bin
b35647b65207f1b7934226c9160536a62feddb945133cd965a6c535ef8d58995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B6 11012 bytes

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