Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a66508587932c98…

MALICIOUS

PDF

43.4 KB Created: 2020-08-01 15:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9010f16ee9ca3e65fe87ff303df02598 SHA-1: 40f0645627ca5001170319a318b035a8395dd4b7 SHA-256: 2a66508587932c98cd35089758d4316c567dba94f544d47d9c39d071ae9704ee
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to manipulate search engine results. One of the primary links directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'simple jquery example', suggesting a lure to a potentially malicious website. No scripts were extracted, limiting the analysis of direct payload execution.

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=simple+jquery+example
    • http://files.howardsillsart.com/uploads/1/3/0/7/130739996/1842731.pdf
    • http://files.rcdavis-tellinstories.com/uploads/1/3/1/3/131383624/ebc2656e5828c5.pdf
    • http://files.centralmarylandweather.com/uploads/1/3/0/8/130814200/ce91db.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/kikunetaragoxix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/7073742458.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/tolixefabumuwewesoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0434/6046/0706/files/namutusatafawuwoponitupor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/davunaxejapezuxipuwuwozom.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/dupikokenuxipotupopap.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/tawuregulanusisujagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jeravutudab.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/34211286665.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/20134812252.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/36092486312.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_off00005d7f.bin
b73451f5b5da6e19c2e6d1c0e04d43629a3d6256f86a9a2763ed95139e85e499		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7F 5260 bytes
font_01_sfnt_off00006f5e.bin
3f6d9ce7598237b751aaac30945218692e491d4b339e301773a9a39a89daec62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5E 15116 bytes

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