Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa81cf8943647fa…

MALICIOUS

PDF

61.0 KB Created: 2020-08-31 00:23:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61ab83611ac830b381e9b4a61973fb12 SHA-1: f26b5924c51ef38fdff5e948d9071b21d72b09fd SHA-256: 7fa81cf8943647fa21cf07caba9398120c1950288eaa107f8dcf293740f05671
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the embedded URLs, https://ttraff.com/wix?keyword=dogpile+es+un+metabuscador, is flagged as a known malicious redirector. While many other links point to benign content, the presence of the malicious redirector and the sheer volume of links suggest a malicious intent, likely to distribute malware or engage in phishing.

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/wix?keyword=dogpile+es+un+metabuscador
    • https://static.usrfiles.com/ugd/5a1791_59fb80f1ac1049e092772a16b0e9ae73.pdf
    • https://static.usrfiles.com/ugd/0f5b72_e9e2868eb3dd4fa88f98c9c5377a2d06.pdf
    • https://static.usrfiles.com/ugd/96768c_81419e2de63e4fa4a79cad3ac4ebb89d.pdf
    • https://static.usrfiles.com/ugd/0779a3_febd650770ec4402acb6acdee716aa9c.pdf
    • https://static.usrfiles.com/ugd/529dbf_6716121c20b943c7af10da37fbc5eb6a.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/jejuki.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/26385948396.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
    • https://cdn.shopify.com/s/files/1/0443/2812/4572/files/xobedibigejijulogapigalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4494/6588/files/dosuginilirujada.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/modagulufujux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/46647586273.pdf
    • https://cdn.shopify.com/s/files/1/0438/4679/5424/files/running_man_ep_354.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/nanuwifuvu.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_off0000ad98.bin
cbe02babc13a6ec3234bb89beef3ede3b96d2fdedf1a2afda048f58376b92d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD98 5532 bytes
font_01_sfnt_off0000c047.bin
24f5ae9fb16da3ae9808738c2dc36fbadad0e9203198efe15b6395045c7ccaed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC047 11480 bytes

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