Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c45b3e9afd2e1e…

MALICIOUS

PDF

59.2 KB Created: 2020-08-22 23:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ef13390dde2ccf89acc5110726b73a SHA-1: 6583de7fb69abf54c604103a0a568afb3ba0c898 SHA-256: e5c45b3e9afd2e1ec0d63b6d374fa858213d0292f5eca80bc15e2d6fdc1b8ac4
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 the presence of a large number of embedded links, a technique often used for SEO link farms or to redirect users to malicious sites. One of the primary links points to a known malicious redirector. The document body contains garbled text but includes the URL https://ttraff.com/pify?keyword=aradhana+naa+songs++old, which is flagged as malicious. The file also contains numerous links to shopify.com and other domains, many of which are likely part of a link farm. No scripts were extracted from this sample.

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=aradhana+naa+songs++old
    • http://meromuba.katherinechwazik.com/uploads/1/3/1/0/131069934/38f37ad.pdf
    • http://files.ddsp.ca/uploads/1/3/1/8/131871419/nufisufig_xubixividovasi.pdf
    • http://pewizik.justcoconotchanel.com/uploads/1/3/0/9/130969959/vurosi.pdf
    • http://xugugumu.leximayde.com/uploads/1/3/0/7/130738720/2118640.pdf
    • http://kimexemir.ferrofluid-design.com/uploads/1/3/1/8/131856772/8889232.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/php_formatter_for_visual_studio_code.pdf
    • https://cdn.shopify.com/s/files/1/0429/3204/3943/files/60670506682.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0433/1965/6603/files/munuwepapumijinepaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/28_day_boiled_egg_diet.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/kopalugisugufozuletejitof.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5225/files/sowosix.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/99021336568.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/thyroid_storm_guidelines_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/97608217777.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/diwivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/fibebiviza.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_off0000a125.bin
5f604f53ec675278129ad882a802971506489276caa06ad5cdf3a99dd049c92b
pdf-font-stream PDF embedded font (sfnt) at offset 0xA125 5076 bytes
font_01_sfnt_off0000b25c.bin
54efc081e8da49535f55eaf9c668ea6887b558db4174a9d5421980b5cf66ecb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xB25C 14656 bytes