Malicious PDF — malware analysis report

Static analysis result for SHA-256 4615a775b2833fa3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-30 12:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a880c9879aec7fac42ab7844d862628 SHA-1: a3985d27533850f5ca7147485524a82da1a5cf45 SHA-256: 4615a775b2833fa38a2b6ad5ddfd8d340330b70059332391cbf89f5dfd2b0c92
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=elizabeth+smart+le+film'. Another heuristic noted a large number of external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0431/0433/8074/files/29270967261.pdf', suggesting a link farm. The document body, though heavily corrupted, contains fragments that appear to be related to the topic of the malicious link.

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.ru/wix?keyword=elizabeth+smart+le+film
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/29270967261.pdf
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/anestesia_topica_dental.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9525543421.pdf
    • https://cdn.shopify.com/s/files/1/0437/0936/6427/files/disable_remote_desktop.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/xijojag.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/16079431092.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b872d4978ec428f9c84fd9f251eb11b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b75bd4ce4f7415a8768c37507cc0938.pdf
    • https://static.usrfiles.com/ugd/20d83a_6e7411e184094bd3837fab36796869b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_02fcd7a8c76540ff8357d32089e30245.pdf
    • https://static.usrfiles.com/ugd/a2d007_08164d85586240d880a22b301ad29f19.pdf
    • https://static.usrfiles.com/ugd/93971e_f7dc186cd67c4cb3a0e89f4e1af11a67.pdf
    • https://static.usrfiles.com/ugd/b8c837_72a77c6f42df4815a362f73cc5c5168a.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_off00006576.bin
5237686c894a5ddac17eee699d2e28891f3291e3c83961c26f544a715a0d79e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 5152 bytes
font_01_sfnt_off000076e0.bin
8a9533af0aab808dd4a5238f9f0e39fec158bc5f43ea755e4bbb86f41fe6ab2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E0 9908 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.