Malicious PDF — malware analysis report

Static analysis result for SHA-256 e814b60de2be39f7…

MALICIOUS

PDF

45.9 KB Created: 2020-08-29 16:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7740e4bffa81a659bd13f294b172abe6 SHA-1: 7079d70e3896574ccbba25c0782a82b2d9e65d2a SHA-256: e814b60de2be39f7ac233dc1c630d0d01bb085f8521cabe9f8fcad7bea895272
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=barefoot+investor+for+families+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a heuristic for a PDF link farm was triggered, suggesting the document contains numerous external links, likely to further obfuscate the malicious intent and potentially distribute more malware or conduct phishing. The document body, though heavily obfuscated, contains references to 'barefoot investor for families pdf' and the malicious 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.cc/wix?keyword=barefoot+investor+for+families+pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78214852322.pdf
    • https://cdn.shopify.com/s/files/1/0435/6086/1845/files/ge_profile_microwave_convection_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/bliss_point_economics_optional_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2485/0842/files/mugatijubes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/sukibuwifoval.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/wezonoro.pdf
    • https://cdn.shopify.com/s/files/1/0434/8873/9494/files/41673264333.pdf
    • https://static.usrfiles.com/ugd/b8c837_7893161c2d3143e59298531205b85fd9.pdf
    • https://static.usrfiles.com/ugd/b8c837_305686cba2b1416ab26206ccd25b4f1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_08e45de8b96645c083bf5be921063285.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6bc3d5a78ca4cea9643cf91a17a9546.pdf
    • https://static.usrfiles.com/ugd/b8c837_66a6cfa2ee224b98bf7f8cd17310c0b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bd0e40eb6e04721a88f651f4d4435b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_66d89211ace54cf2a4bfab0e80454bf0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2830e2995856465780ee103a7b19d419.pdf
    • https://static.usrfiles.com/ugd/b8c837_6520f5d14ed244a8b758c44845067024.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_off00007428.bin
456c2a859649bbcf8591734e4666c0e8b06b6d39778ddbd4d655456f35196944
pdf-font-stream PDF embedded font (sfnt) at offset 0x7428 5296 bytes
font_01_sfnt_off00008617.bin
63ce4bd38760452fafa29ca5f7a52958d8bcb4d4621aac09fb121c0cd30088e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8617 11184 bytes