Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ae34517047e4ba…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 19:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba476752f4d66d178b7d21863eb406f SHA-1: 01f2ca5b85aaedce22252606097f0ac207bf613d SHA-256: 33ae34517047e4ba7c6f395c1d09b00251a883247d21dc5a18a92840daef6855
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=french+family+worksheets+pdf', suggesting a lure to disguise malicious activity as legitimate content. The presence of numerous PDF links and a malicious redirector indicates a likely attempt to drive traffic to malicious infrastructure.

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=french+family+worksheets+pdf
    • http://files.flashbackspot.com/uploads/1/3/1/3/131381782/f8194.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/soxanurudezodasoxusezovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4302/8120/files/67963605014.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/fafizigovigisuxano.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/97895627230.pdf
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/kowirigureweguxobamor.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/4139694168.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/xekujilawexobozum.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/ginizunutiba.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/logical_connectors_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/gikiwifejadir.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_off000058d5.bin
b695d01661091597f0ed280056b20a9ed6061d8f19390ac6927d19aba6e9abf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D5 5608 bytes
font_01_sfnt_off00006bcd.bin
3dd792ef80c9a4b391f68c64872c6cdfea2d04350cd6c26cc66def9e40dfd2a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 10192 bytes

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