Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e6e1568aabee3e…

MALICIOUS

PDF

47.8 KB Created: 2020-08-15 08:48:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6109ea61b720f1ae4d01fa5c5d1adaef SHA-1: dc9c76ac0ef4b8bcb650fd63431b4e08b3e51477 SHA-256: 91e6e1568aabee3ee3b25bb7d7ccc5390aed70034af953e120990593861fe17c
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 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. The presence of a malicious redirector indicates an attempt to lead the user to a phishing or malware distribution site.

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=draft+llp+agreement+in+word+format
    • http://files.ruthscheuing.com/uploads/1/3/0/7/130775727/74113.pdf
    • http://files.annettedelcanto.com/uploads/1/3/0/8/130814900/busosinu_reburif_vubifurawebe_kinemogilerak.pdf
    • http://files.mishpuchacamping.org/uploads/1/3/0/7/130776661/zifotavasen.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/git_difftool_meld.pdf
    • https://cdn.shopify.com/s/files/1/0432/4399/5298/files/27358811531.pdf
    • https://cdn.shopify.com/s/files/1/0433/0848/2724/files/vaxujakarafav.pdf
    • https://cdn.shopify.com/s/files/1/0446/6409/4873/files/free_converter_to_word_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/63247088862.pdf
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/tevuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/porth_pathophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/77396392059.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/39033569337.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_off00006ea1.bin
85b692c1c636aed9ab1240d2a7361179fdd6c0849396a06064984f922e967b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA1 2828 bytes
font_01_sfnt_off0000789b.bin
6cf150d5221e8685bd7fd2755c10cbcd786a5fe9c57bbdcd498eaba67a74c792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 5272 bytes
font_02_sfnt_off00008a88.bin
a1f5d990cb3968f2dcea92554224549d8febb03790668dcb83069b2446a7aae8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A88 12308 bytes

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