Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1aaaa333e4c324…

MALICIOUS

PDF

100.5 KB Created: 2020-09-07 17:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52058358727e1ea37b75627ae0bbe6c9 SHA-1: 09d40b1e0f4a534fea0d9ac71053f7e3ac53c417 SHA-256: cb1aaaa333e4c3242a074b53d25fcafa507faf097eff1ebca7d4d8dcf4df3553
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=give+spreadsheet+application+package'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same suspicious URL, suggesting 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.cc/wix?keyword=give+spreadsheet+application+package
    • https://static.usrfiles.com/ugd/6846fe_98a181ea2b95456181cbc6ec308c9c14.pdf
    • https://static.usrfiles.com/ugd/81ef4b_380a9b4263fe421997d8f6ebd7a51b01.pdf
    • https://static.usrfiles.com/ugd/9904c2_556cddedbd134ede9829a3c544c30762.pdf
    • https://static.usrfiles.com/ugd/99a8f2_2d243becc84f473098aafc43324e4f48.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_8c56fbfb8e87453b8e30fa0bcffe828d.pdf
    • https://static.usrfiles.com/ugd/6f53d7_affcf8241c0c4bd591c439d9fae64f64.pdf
    • https://static.usrfiles.com/ugd/b11f6d_d4147cabb1ba468891fe9e6ec78ea09a.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ea909af08f64bdaa4c5220f14457c2e.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/gekoxojutuzigomoronodilab.pdf
    • https://cdn.shopify.com/s/files/1/0429/8529/1937/files/pitexoje.pdf
    • https://static.usrfiles.com/ugd/205ae4_7081b211cd0646bca96c84115f33271e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9236d82bb33a4faeb3b015bf5656cb6c.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_off00014040.bin
df51ca7ac481ea588f419939900f74c8eced8438c56b81d49d4b0c3be807c9e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14040 5488 bytes
font_01_sfnt_off000152ed.bin
52d307c5aca22637cfe1337627c51a5cdaed11547e4627bd82470c3571ed85a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152ED 15552 bytes

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