Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f725b8288a51133…

MALICIOUS

PDF

60.6 KB Created: 2020-08-18 18:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 875c0fd61cff3719bc44d30bd6bc1fc2 SHA-1: f2343abc227fcfb298d3046c4f6da12a57716522 SHA-256: 4f725b8288a51133ca9bb3a18b92b1ca03a63e54ef71d32643de9785ba5d272d
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 a URL that appears to be the same redirector. This indicates the primary purpose is to redirect users to malicious content, likely a phishing page or malware download. The PDF also contains a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for 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=acog+preeclampsia+guidelines+2017+pdf
    • http://darem.sleeptalkingbaron.com/uploads/1/3/1/1/131163729/notodaxopusop-kusexis-xijezaziw.pdf
    • http://files.kevinkilroy.org/uploads/1/3/0/8/130814032/juderasepujapaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0005/3408/files/gomenolipolevexi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/81442573517.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/bogepepejuwozagirolel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/28565937403.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/46956946131.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/ecbc_2017_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/24603020373.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/naxesorewukugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/21849417005.pdf
    • https://cdn.shopify.com/s/files/1/0435/1852/5599/files/73944186894.pdf
    • https://cdn.shopify.com/s/files/1/0439/9444/8030/files/lover_birthday_cake_images.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/19321590113.pdf
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/biological_classification_neet_mcq.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_off0000ad99.bin
f64b8731a607910610f2248985f16e90a0ff51438be3617457e0414017345f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD99 5872 bytes
font_01_sfnt_off0000c18b.bin
d2e78b6e510799a3e7c2d68f230d51ddd3f15fddf00d3f17b974be85d1312132		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC18B 10420 bytes

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