Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a18c5f2ba79796…

MALICIOUS

PDF

39.8 KB Created: 2020-08-03 05:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e2c21b7375cc4ffecb977f3b7f70f5a SHA-1: 3511b7ecda7a08e9d125e0d23825b87d69e25e70 SHA-256: 24a18c5f2ba797962eae330a3c68140816ac04dcf0c729762c0e43d17f047831
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=python+list+remove+duplicates', suggesting a lure to a malicious site. The presence of numerous PDF links and a malicious redirector indicates a link farm or redirection attack, likely intended to lead the user to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=python+list+remove+duplicates
    • http://files.cynthiamade.com/uploads/1/3/1/4/131483955/fodibulupezejamavuvu.pdf
    • http://files.beinsynch.com/uploads/1/3/0/8/130814052/jepenar-xizexe-subezunu-moviworetobuti.pdf
    • http://files.kellymansfieldart.com/uploads/1/3/1/8/131856950/6733675.pdf
    • https://cdn.shopify.com/s/files/1/0434/8153/0534/files/jinip.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/mofozowamud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/penosud.pdf
    • https://cdn.shopify.com/s/files/1/0436/7518/9401/files/74098775910.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/83998813507.pdf
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/58701941454.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/xoxamasiwoxajovozudil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1712/files/winuxijef.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/pariwoxutekijitide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6912/8354/files/69311276405.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_off00005e29.bin
a6e612bbb943bf1b23a0a89b5e40cac7682834581c44526538236c973829e3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 5476 bytes
font_01_sfnt_off000070a6.bin
cf246045947f7a675ab6aefac85efcef8be6e494d9e91c435c797da2d83711d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A6 9944 bytes

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