Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f673eb4b49a87d9…

MALICIOUS

PDF

32.3 KB Created: 2020-08-31 04:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88f18ae6d0cf2fd13619545c85631994 SHA-1: e1a4ddcf97d6cc64aba5ca5d10fd90b09247cdea SHA-256: 9f673eb4b49a87d992236a120bbedf433c2baee38468acfa14b35e68f09627f5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF SEO link farm. One of these links, 'https://ttraff.cc/wix?keyword=erick+david+uriarte+lozada+sale', is flagged as a malicious redirector. The document body contains text related to a sale, suggesting a lure to entice users to click the malicious link.

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=erick+david+uriarte+lozada+sale
    • https://static.usrfiles.com/ugd/ca300b_8c4b0f4b9b7d43e88dc5c685352b0b32.pdf
    • https://static.usrfiles.com/ugd/39cb9d_b7f57b07b56f4ce98d30e458a94c9b46.pdf
    • https://static.usrfiles.com/ugd/dad90e_69758ebd2ada4f8eaaf83165c4df7de1.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef332902125d44f09dab24f6d572cbe8.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/master_editor_blogspot.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/60631100254.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/resanozewelugesotunetijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/buwukifodasudapidol.pdf
    • https://cdn.shopify.com/s/files/1/0432/7954/8574/files/93317180360.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/sosoti.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_off00004316.bin
cfd7ad5f1344fa3a48f66f8ab9f5e5a5359ffc343ff1ba56bbcb20879ba4acee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4316 5064 bytes
font_01_sfnt_off00005464.bin
5b707441995b3346f7cb0a6e5421c943ea366d8be20074e10296d0213d819e6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5464 9480 bytes

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