Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfb06167c21c40d…

MALICIOUS

PDF

35.5 KB Created: 2020-07-29 06:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cd53a84c8479a9b0cb4c42350f879e9 SHA-1: 14a918e858194f49aea0cb3e6d7cabe805c0df7b SHA-256: 3cfb06167c21c40df3875a5cbada42a42588df19cff93b56bb9a3cb928a272b3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=just+answer+me+gif', is flagged as malicious. The document body contains text that appears to be related to the redirection, suggesting a lure to external malicious content. The primary purpose appears to be directing users to malicious sites.

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=just+answer+me+gif
    • http://files.lakeokarekapreschool.co.nz/uploads/1/3/1/8/131857650/diwekimu.pdf
    • http://files.soloforsenate.com/uploads/1/3/2/6/132681954/4561530.pdf
    • http://files.musicatmainstreet.com/uploads/1/3/0/7/130739839/davetuxu.pdf
    • http://files.gamecreek.com/uploads/1/3/2/6/132681824/nijovogexafej.pdf
    • https://cdn.shopify.com/s/files/1/0434/1995/9454/files/41621044045.pdf
    • https://cdn.shopify.com/s/files/1/0434/4823/8241/files/suxovotukefalenulitemokil.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/gosibiziretirup.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/95940881593.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/43420110375.pdf
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/31942795589.pdf
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/kagoruvitakubasagevaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/vafodunigigifijugajor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/49893682365.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a4.bin
ec63f98d304444281922ecd95b7899ca7ba2ee06547bfd19dc6a597208aecc61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50A4 4908 bytes
font_01_sfnt_off00006142.bin
b6f036b9de4a2479e3d15e1b13bac1cffb1bdf8736737db613d11d3319c42f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 9408 bytes

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