Malicious PDF — malware analysis report

Static analysis result for SHA-256 b11fc5dbf2557248…

MALICIOUS

PDF

44.4 KB Created: 2020-08-15 03:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a85a754473c76356431a20278d22315 SHA-1: cbef9fa113f5fb5499700bfc8b0bbddc80c67935 SHA-256: b11fc5dbf2557248efb85f3e6dbe2cce7b5a3f8e044d40a50a1a38583cf93c08
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=aov+guide+samurai'. While many links point to benign Shopify domains, the presence of the redirector and the sheer volume of links suggest a malicious intent to distribute or obscure the final destination of malicious content.

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=aov+guide+samurai
    • http://files.icareunited.org/uploads/1/3/1/0/131070723/doxowefotuwiwatalop.pdf
    • http://files.entotofoundation.org/uploads/1/3/0/7/130775520/5286418.pdf
    • https://cdn.shopify.com/s/files/1/0437/2063/8632/files/brealey_myers_allen.pdf
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/birkat_hamazon_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/6277252978.pdf
    • https://cdn.shopify.com/s/files/1/0435/5715/9063/files/bologofekevotafumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/algebra_based_questions_for_ssc.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/57278438643.pdf
    • https://cdn.shopify.com/s/files/1/0428/5811/9334/files/598976964.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/mixepaxigetini.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/69033209557.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/wifisoxarizotilarijosabis.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_off00006456.bin
472e73d38652c43dcdb369282ac8f7b4403bb2089966ca97e96d68989bb0975f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6456 4860 bytes
font_01_sfnt_off000074df.bin
99503c314b5240b790243d29ce89baaf8a773564c5fd8f9c7f876b1dcf335c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 10060 bytes
font_02_sfnt_off00009760.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9760 4324 bytes

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