Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8e51e302e65d82…

MALICIOUS

PDF

45.7 KB Created: 2020-08-21 01:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73996f8297a204d8b750fc207c944514 SHA-1: 43ba57fa2525736d9ef369c99e596dacb245adc1 SHA-256: 2e8e51e302e65d8228f0744bf9a06afd4a9b0bb04975fadca3cc4e340387c405
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=letscom+fitness+tracker+user+guide', is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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/pify?keyword=letscom+fitness+tracker+user+guide
    • http://fozonara.daniellebodine.com/uploads/1/3/0/8/130814004/4048933.pdf
    • http://files.thefrancisfuneralhome.com/uploads/1/3/1/6/131607440/b7b6289717.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/35843499692.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/71419068336.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/24072555976.pdf
    • https://cdn.shopify.com/s/files/1/0433/3846/5435/files/ruby_true_false.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/jurefivowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/nuxojekafoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/66783270628.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/56701910375.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/apostrophe_activity.pdf
    • https://cdn.shopify.com/s/files/1/0437/1765/6731/files/wolfgang_puck_pressure_cooker.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/58522491177.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_off000074eb.bin
a45d50f8209e734ce1c864e35194d012b9bad9d01c00b32887a944aa55bbf89e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EB 5312 bytes
font_01_sfnt_off000086e6.bin
08641303389bd20c93a2b09e18d99c41bb5ccfe7ac77b55e880fe84f533c83d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E6 10316 bytes

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