Malicious PDF — malware analysis report

Static analysis result for SHA-256 8643f6b7cdabcaa0…

MALICIOUS

PDF

49.2 KB Created: 2020-08-12 02:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fca3bf6303484bc4c2546e48b1062a5 SHA-1: b417858a8b1b41768a3fed15453506dda1bbdc09 SHA-256: 8643f6b7cdabcaa0e9f50b8c731bc51010620447fed5df2194c043498d81977e
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised with a keyword related to medical advances. This suggests a phishing or scam attempt. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine results or distribute further malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be redirection to the ttraff.com URL.

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=technological+advances+in+the+treatment+of+type+1+diabetes+pdf
    • http://jipima.techinfinityconsulting.com/uploads/1/3/1/6/131637016/gazapibipi.pdf
    • http://nalofe.sledgedistillery.com/uploads/1/3/0/8/130874254/556984.pdf
    • http://files.maplegroveumciowa.com/uploads/1/3/1/4/131452750/nusolopipasiwine.pdf
    • http://jijiru.centrallouisianaorchidsociety.org/uploads/1/3/1/3/131383544/nobebovazif-sisotaz-suwozumudi.pdf
    • http://files.viotein.com/uploads/1/3/1/1/131163904/3179114.pdf
    • https://cdn.shopify.com/s/files/1/0435/3094/4671/files/biwepovatul.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/44178459464.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/632585748.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6896/files/93680137119.pdf
    • https://cdn.shopify.com/s/files/1/0445/3584/0932/files/git_commit_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/cambridge_certificate_of_proficiency_in_english_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/5411/1656/files/47592829086.pdf
    • https://cdn.shopify.com/s/files/1/0434/7881/0789/files/38707778569.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/8126/9401/files/44470792564.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/73327206593.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_off00007ee6.bin
d0118adc20bb7eb29371083d9aa00e31df887cb9b8d87f06e6ad5efeae9401b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE6 5872 bytes
font_01_sfnt_off000092c3.bin
9075f4c06fe962bc03a84499582f4ad4683f4c755ce60d5e9996c8807f76c730
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 10784 bytes