Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0c813e3ce783d0…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 09:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bc3c2873996e534af3713a5379e63f4 SHA-1: 7bd1f5640410d6518a4a0b42f534a9f5a91b5f53 SHA-256: ad0c813e3ce783d0fc7e395c9e87026bb7c18d73197d9fcdc56de520b18c60f9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of these links, https://ttraff.com/pify?keyword=ncaa+bracket+template, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/pify?keyword=ncaa+bracket+template
    • http://kogunan.roguesrugby7s.com/uploads/1/3/1/1/131163927/6cd95c30c882.pdf
    • http://files.wanteddoa.com/uploads/1/3/0/8/130813511/7852199.pdf
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/learn_old_norse_language.pdf
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/mimaxoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/86567514187.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/27734231678.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/lefukaxotomatokeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxupajajivamuwiri.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/fubulawitalenejulej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/iud_insertion_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/23851578152.pdf
    • https://cdn.shopify.com/s/files/1/0459/9231/2991/files/resume_templates_for_microsoft_word_with_photo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/wugemataxesu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/60764181286.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/70339562220.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/xizijebuxug.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_off00005cf0.bin
4a170f8825cbdd23d9836cc6d79cc9f63ce7ee91c7ee0ebb2d337aac42f8879f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF0 4596 bytes
font_01_sfnt_off00006c91.bin
bd34c65f096d926f565bf5d5a93eaabf7f51cbd3b794321301a3be6a8d924326
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C91 10416 bytes
font_02_sfnt_off00009021.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9021 4324 bytes