Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0d938f8dc91d07…

MALICIOUS

PDF

41.4 KB Created: 2020-09-04 08:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bd0b7c24a61d82369ecc1c7b01adf01 SHA-1: 628ec6d6aff19b7bfa1166e52c30df73702574a7 SHA-256: 3b0d938f8dc91d07188db3c619bd08a398ba50df3f7f837890d76a2ed9da9c13
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, a common tactic for SEO poisoning or link farming. One of these links, https://ttraff.me/wix?keyword=jasper+reports.+net+alternative, is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL, suggesting it is the primary lure. 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.me/wix?keyword=jasper+reports.+net+alternative
    • https://cdn.shopify.com/s/files/1/0431/6577/8076/files/8712305585.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/19634827509.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6673/files/78896659007.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/buvazajegarofezax.pdf
    • https://static.usrfiles.com/ugd/3e9e83_06c2307b9c804ce3a289fc06184bdcf1.pdf
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/4810966054.pdf
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/69475992943.pdf
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/37181971282.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/34834548441.pdf
    • https://cdn.shopify.com/s/files/1/0432/0971/9965/files/lowezomikujumiz.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_off000063a8.bin
946d12c2c087a94b28266faf12fd771b4607d4b37bf59f8b589e61de7ecbb97c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 4892 bytes
font_01_sfnt_off00007469.bin
abbff4ea671610884f7d096b164fa22a63bde31fbb085b33793e2311a68badd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7469 11180 bytes

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