Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc8db4a7e5db8c1…

MALICIOUS

PDF

47.8 KB Created: 2020-09-01 04:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ff620744ec18df48753ac9ad126fc85 SHA-1: 2535e15f7e36635ed73df0185dbf2a9b052be413 SHA-256: ebc8db4a7e5db8c1d9c4716bd1f2985eae2501dc9ae0ae48d61efc970ce43af9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to sheet resistance and URLs pointing to various PDF files, suggesting a link farm or redirection tactic. The primary malicious URL is ttraff.cc, which likely serves as a gateway to further malicious content.

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=sheet+resistance+ohm%252F+sq
    • https://cdn.shopify.com/s/files/1/0431/6446/7357/files/deep_purple_lazy_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/zulopegulaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/64529503488.pdf
    • https://static.usrfiles.com/ugd/9d66c7_a761bf18293141e79619484280b7b733.pdf
    • https://static.usrfiles.com/ugd/493135_6e3ba18604d14532bd882772c60fe1dc.pdf
    • https://static.usrfiles.com/ugd/221f3a_54302141956241b7b68867406c8774c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_267c64cb94ed4212abc2beb0b1fef955.pdf
    • https://static.usrfiles.com/ugd/2c8d66_4bb8ad845600496c86826cfc52569cae.pdf
    • https://static.usrfiles.com/ugd/5ed537_ebdf57ddd3e941aab98d094a0813aeea.pdf
    • https://cdn.shopify.com/s/files/1/0437/7224/8215/files/25209127034.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/dark_empire_trilogy.pdf
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/54430290172.pdf
    • https://cdn.shopify.com/s/files/1/0450/9502/6840/files/40k_necron_codex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f30.bin
dac0e2db7e867388c2778455ed4ae34f63803e9fa16b8bcfa49cf89968b30d7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F30 5272 bytes
font_01_sfnt_off000070fe.bin
558312f206b42755f0c0aead26ce07ef6f8f06f275d43b0ef6c41246a9b49c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FE 11052 bytes
font_02_sfnt_off000096fb.bin
598c04f5e414758522164ea888897639cc9a8b7526fe7e44a66c5dce69301cb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 17744 bytes

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