Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45fcfefd616b62b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-31 01:57:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b32c1dd7b6ae0d86854f8a6761c0b99 SHA-1: e887d326c21475d50d28bfae6d02f3ff9af52239 SHA-256: c45fcfefd616b62b6ad34e02216318421f4422d5a2b004c2866ddc1081a36f3a
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=goldberg+theme+song+wcw, which is likely intended to trick the user into clicking it. The PDF also contains a link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse.

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.ru/wix?keyword=goldberg+theme+song+wcw
    • https://static.usrfiles.com/ugd/b8c837_b199982e9424494faa47077ed883b1b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_b66bdac578ff4bfe8809dfc5a824aae7.pdf
    • https://static.usrfiles.com/ugd/b8c837_281e734dd9934f03bbd40e4afd39e7fb.pdf
    • https://static.usrfiles.com/ugd/a1fb72_026e0e47a09145538f0097f7c53cbd14.pdf
    • https://static.usrfiles.com/ugd/26481d_565dcfa0fbb4432f92edea1ad2c6b4a7.pdf
    • https://static.usrfiles.com/ugd/d902bb_bfe26f8f5d0c460e87bde561e2e48931.pdf
    • https://static.usrfiles.com/ugd/c3f59f_f5c2b0392cfc4483b3607bfb47465d8d.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/66650081454.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/receipt_book_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/xoxososedowuwanijikefili.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/bezufakefamebipigi.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_off00005def.bin
be6d8283778d682bd536a7825f7b8c422d77574ed9c5d3a41e74b5a3723083ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEF 5408 bytes
font_01_sfnt_off00007047.bin
4cacedf81add45cc525af30870286c8a968648698ff73db19fe3bc8a627b1f49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7047 10120 bytes

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