Malicious PDF — malware analysis report

Static analysis result for SHA-256 af23611085dc3b95…

MALICIOUS

PDF

42.8 KB Created: 2020-08-01 03:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8030f1ad07a5cf7d77cbdc0dcf5079f5 SHA-1: 67230618bc498ef73522c3af38642a5c9982c990 SHA-256: af23611085dc3b950ad04d5f23c3322fd60d494398c8c07f6cf5e2295e692479
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=borderlands+pre+sequel+heads'. This indicates a social engineering attempt to trick the user into visiting a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted from this sample.

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/pify?keyword=borderlands+pre+sequel+heads
    • http://files.apexmiddleschoolpta.com/uploads/1/3/1/6/131606762/1bdb4e.pdf
    • http://files.rockingcleatherandboutique.com/uploads/1/3/1/3/131383510/7375545.pdf
    • http://files.nomadnubians.com/uploads/1/3/1/8/131856339/9393934.pdf
    • http://files.gracechasers13.com/uploads/1/3/2/8/132814898/34aa392821f204.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/92858820518.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/89618951264.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4665/files/masizaxuxij.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/fovuporakujufupenob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/28638782728.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7831/files/83427644681.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/14369830508.pdf
    • https://cdn.shopify.com/s/files/1/0432/2131/9837/files/76796900999.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/53379593014.pdf
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/40875113163.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_off00006a09.bin
b80ce7813c65fea4fffa5442eb4ca59aa2855ab19c9b3fc2e7d6af0e386d688c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A09 5224 bytes
font_01_sfnt_off00007bbf.bin
8f5e807986f2bc76c550bbf47893c1daf70961a3e0cada59c7575c992da82466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBF 10144 bytes

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