Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe067f07d23ec5d0…

MALICIOUS

PDF

42.2 KB Created: 2020-08-15 02:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4798929de9a4b143726d432f8c51b729 SHA-1: e1d75e7b4e18c6e09631fddb3498c5a2212533ec SHA-256: fe067f07d23ec5d0828df4d2a181d8f6aa34ed280c66268bec6543fe54b61bc5
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, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.com/wb?keyword=john%20deere%20lawn%20tractor%20e100%20manual'. This suggests the document is designed to redirect users to malicious sites under the guise of providing information related to the search query.

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/wb?keyword=john%20deere%20lawn%20tractor%20e100%20manual
    • http://files.roxyguitar.com/uploads/1/3/1/4/131410479/1254108.pdf
    • http://subapul.k-scopesolutions.com/uploads/1/3/2/8/132814930/pexegu.pdf
    • http://files.supervillesovak.com/uploads/1/3/2/6/132680796/aa2b1.pdf
    • http://dolufuvet.robkodama.com/uploads/1/3/1/3/131398140/biwilot-kufejakose-makapino-domigol.pdf
    • http://files.alanalapoint.com/uploads/1/3/0/9/130969742/8d47a0e8516f.pdf
    • https://cdn.shopify.com/s/files/1/0428/4533/9814/files/51070437031.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/btwin_triban_100_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/xekezila.pdf
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/xilotanijiboziginir.pdf
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/tivopotimoxegutiforiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/3212/4312/files/gilaguwaxusitubuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39738284996.pdf
    • https://cdn.shopify.com/s/files/1/0437/2617/6407/files/catalogo_de_aspersores_para_riego.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/42573384624.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/69893436188.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_off0000663b.bin
594de5b05e19f27a23561ed20f6f28a342858a66a344a03d5d98049025412927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663B 5276 bytes
font_01_sfnt_off0000780d.bin
b3cfad3917ce82469147e1b7fa1ddbc679b77a09681cc2fb29c283f02a2abf83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780D 10512 bytes

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