Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c7785c9b36ca3b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 13:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 782f6894a54d81ac700e3c1ab89f8f00 SHA-1: bfb9dd2a3542d921a1a6cc8b28e27a2461b009b6 SHA-256: e9c7785c9b36ca3b42287640135c6ed26a1c89f7a0efe036ffc05286f0dde73d
120 Risk Score

Malware Insights

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

The PDF file contains embedded links and text referencing 'Gtx 1050 fans not spinning', which is likely a lure to attract users interested in computer hardware. The primary malicious indicator is the link to 'ttraff.com', identified as a malicious redirector. This suggests the document is designed to redirect users to potentially harmful content or phishing sites. The PDF also contains a large number of other links, many pointing to Shopify, which is characteristic of SEO link farm techniques used to artificially boost search engine rankings for malicious sites.

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/wix?keyword=gtx+1050+fans+not+spinning
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/22799393916.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/30469097871.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/because_of_bethlehem.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/46320762154.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/zijurogefalubufisuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/mewomazorixoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3899/files/siguzebikinokerepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/pilijovizer.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/84071037927.pdf
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/wowabudu.pdf
    • https://static.usrfiles.com/ugd/b8c837_2194ea78d2544d08ad7d57aa5fd3d928.pdf
    • https://static.usrfiles.com/ugd/b8c837_2de0a9dc2c264526926d7851542ac9a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_356230d3c3694ca8af539d8cba9a1ce1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b7e6ba1dcd4a3a8e9da07b81913988.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_off000073c9.bin
8f810570b53f12d4e950119ee0e66bb6dea498e90def98a410106dbaa45e6f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 5356 bytes
font_01_sfnt_off00008632.bin
b305d62d83746d842afba4c4df339089332eea350337637fd0290aefb2f3eef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8632 10452 bytes

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