Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad07b48b8d4fe85…

MALICIOUS

PDF

123.5 KB Created: 2020-08-31 21:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7415f8da27398e2afb3b457b1230a3a6 SHA-1: 00a06ea284241ca7fa086b0defcdbed346bdec9d SHA-256: aad07b48b8d4fe85d7db878d8b8f6f2998f373e400747835fe912bd5bfb91b2f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits malicious behavior through a critical heuristic firing indicating a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/wix?keyword=lundin+petroleum+annual+report+2016. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended lure. The presence of numerous links to external PDFs, many hosted on Shopify, further supports the link farm attack pattern.

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=lundin+petroleum+annual+report+2016
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/86411913217.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/15265380940.pdf
    • https://cdn.shopify.com/s/files/1/0436/4373/2126/files/48936591991.pdf
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/8239875993.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/93430261245.pdf
    • https://static.usrfiles.com/ugd/91e123_de68f1dc2d684fc6acc31e8d9b68ed98.pdf
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/neeraj_nachiketa_environment_and_ecology_book.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/bopalivotozomekego.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/16755389066.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1251/files/degofog.pdf
    • https://cdn.shopify.com/s/files/1/0430/0596/8537/files/android_10_nokia_9_pureview.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_fa58caf09fe24a4eb00ca3737d8b7078.pdf
    • https://static.usrfiles.com/ugd/b8c837_4882addf254c45429f8ddd300ca1c29a.pdf
    • https://static.usrfiles.com/ugd/764aaa_bff6b3df0fd44be0af68f8e8be20345b.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_off00019d33.bin
71dfd50d763e82b08157afe44ccd8e70d7aa790257c316f744be4d56e81c7922
pdf-font-stream PDF embedded font (sfnt) at offset 0x19D33 5348 bytes
font_01_sfnt_off0001af4f.bin
c3522f9c48ddb2f94e4c32b22ea64d3be0324941f70eb2fef6c2dc6f017e0400
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AF4F 16040 bytes