Malicious PDF — malware analysis report

Static analysis result for SHA-256 806dca11015a4cdd…

MALICIOUS

PDF

54.3 KB Created: 2020-09-01 14:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83190282dc619adbeac6046b77453672 SHA-1: 2b3a94ca5dfc05554d2a1bfe111b1653e8f6fd77 SHA-256: 806dca11015a4cdd7153e92c0a6a19b75d64aed5e37e276f3ab40e3ae3b9fc43
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=rhetorical+analysis+essay+template'. It also exhibits characteristics of a PDF link farm, with numerous links to Shopify-hosted PDFs, likely for SEO manipulation or to obscure the primary malicious destination. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure.

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=rhetorical+analysis+essay+template
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61238086127.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/sesozenowukumukemipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/bodotuxiri.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/23856642224.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/xefugofavukej.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/pdf_file_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/next_day_air_saver.pdf
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/10637370834.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/51725840379.pdf
    • https://cdn.shopify.com/s/files/1/0435/2924/0727/files/70271168313.pdf
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/numuleweliramumod.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/zazesesagevajajipawis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/59145273655.pdf
    • https://cdn.shopify.com/s/files/1/0470/9515/2798/files/15007863837.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0432/9521/1680/files/depokuwad.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/88957147407.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_off000096e2.bin
027d23173aa191d1c653d4d6215a02d486e5ac49675e81935bc57f9c3adf8f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E2 5280 bytes
font_01_sfnt_off0000a8b9.bin
0eddeaba553f9dcd1cd2b599e78999816434e65e44faaf517c0039002c614416		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B9 10232 bytes

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