Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee80ebc95631e6a…

MALICIOUS

PDF

35.5 KB Created: 2020-08-30 22:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3395a7695c08d248a800b40d0aecbe5 SHA-1: edce004c06e4d8264993c9e775344d2f293d852e SHA-256: 2ee80ebc95631e6acfbfc3aef92ddb7263ae032fab1974feb91aeb87b0da786d
150 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 Shopify domains hosting other PDFs, suggesting an SEO link farm tactic. One of these links, https://ttraff.cc/wix?keyword=coleman+5500+generator+specs, is identified as a malicious redirector. This indicates a likely attempt to lure users to malicious content through search engine optimization. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=coleman+5500+generator+specs
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/52612979610.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/baby_dance_video_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0439/6885/6222/files/he_was_a_skater_boy.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46824776831.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/critical_care_transport_field_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/cenicienta_para_colorear.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/43721956737.pdf
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/bevakawifupege.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7498/files/pokemon_xd_gale_of_darkness_rom_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e20110fd41f4636b6ca4aa6395a8683.pdf
    • https://static.usrfiles.com/ugd/83b1b3_b1432178566c423da4b37026f3afea24.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d791ac1433d47b5ae15dd4042e1d47c.pdf
    • https://static.usrfiles.com/ugd/e2b09b_fb327b8694a5400bbba255f6ab016f3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_de3c9db0f874497da0122ed0da29be62.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_off00004aa3.bin
73e1536e1b389b9ab2cb7f4443d2d5b3a76587b3138ab52eda56508c3fd7b135		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA3 5424 bytes
font_01_sfnt_off00005cfe.bin
3d71faef20b7b480434f4f153537e67db54dc61cdae141dd719c42a96ada911e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFE 10868 bytes

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