Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebeeae2b5a2b6380…

MALICIOUS

PDF

34.5 KB Created: 2020-08-29 04:49:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2c99bce1d8d661ebf729ca6851cd7a SHA-1: 13d0ed460584804ba8241a7c20c77c9f7f1adfcc SHA-256: ebeeae2b5a2b6380a326784f653df7678fbb324f70ee9bdc050e80e1aad3690d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF file contains a large number of embedded links, a technique often used in SEO poisoning attacks to drive traffic to malicious sites. One of the embedded URLs, 'https://ttraff.com/wix?keyword=the+wisdom+of+your+cells+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, reinforcing its malicious intent. No scripts were extracted from this sample.

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=the+wisdom+of+your+cells+pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8542/files/java_bubble_sort.pdf
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/gimejutava.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/lafilesejosubufigodevafev.pdf
    • https://static.usrfiles.com/ugd/b8c837_7471b1917eb94287b999ede0c3e7c742.pdf
    • https://static.usrfiles.com/ugd/b8c837_442a4f9bbafe4f37acc50f307a1d90f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ab88d13d7d44d0288ab190757688216.pdf
    • https://static.usrfiles.com/ugd/b8c837_9becf97edb5b47ac802ddac25e54f8ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_786234e29bcb4c4b8140c880d286c860.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1b8ade76229454ea10986fb5444fb58.pdf
    • https://static.usrfiles.com/ugd/b8c837_abd7ae0231f74153a4cf2db03d9db9d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_931d0a0c3bc14781aecbc1dd32e2fcaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_29e5d4c05720453e9c6e518904891e01.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_off0000490a.bin
1e0fbfa5d1b499c874ab33f47eb3808c8a1d87bd21620c057b7f7ad3962c4af1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x490A 5328 bytes
font_01_sfnt_off00005b1f.bin
6c5387ac2e75b14f0fecb1704991218eaa943675dc8054ef31ceb1d4738b081c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1F 10100 bytes

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