Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e850256c9e7d784…

MALICIOUS

PDF

39.1 KB Created: 2020-08-29 01:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b84a165aea79f6e50ba7d7f19b11f24 SHA-1: 02ed0818c693ba11cac93592fe5bf2f16b94b4d3 SHA-256: 3e850256c9e7d7847c72e58eebb4ac25508522714374c1ad5eb5d18d0e4b083d
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, a technique often used in SEO link farms to manipulate search engine rankings. One of these links directs to 'ttraff.com', which is flagged as a known malicious redirector. The document body contains garbled text but includes the target URL, suggesting a lure to a malicious site.

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=tornadoes+telstar+mp3
    • https://static.usrfiles.com/ugd/b8c837_2f09115c31ba43d1998f27242f01d6c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e05623e3ceb464f836ccff069055db1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c47477d0a47479489360f4e2d25dbbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9df1785c73f44e180cbcac098638223.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7eadc1caf0b4c1e95814b6296c2172f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e4e9d4e11fb4c6595592d5dabff8ae7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/pesesenodibokewogorepem.pdf
    • https://cdn.shopify.com/s/files/1/0436/6568/6681/files/the_intouchables_english_subtitles_p.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8824/files/21535953283.pdf
    • https://static.usrfiles.com/ugd/b8c837_aab46271fa4b4c2c8da4aa8f71a5113e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f0770933eb84f02b7e5686906e87408.pdf
    • https://static.usrfiles.com/ugd/b8c837_8992c6c61f6a4a778ae1079b6b64cb02.pdf
    • https://static.usrfiles.com/ugd/b8c837_535d5e5d905d4592bf1b433bcf1437bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_043578afc2d9490085c19e54584d56fb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e32.bin
70a9dbf1ac72c8bbde1d35742e29890f5619c19dd2c822f5690840c3ad192551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E32 4956 bytes
font_01_sfnt_off00005eea.bin
a273b47191d9b729ffb0ea5b96783c2a8fd7a5203220bc7cdf5bd70296424d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEA 10192 bytes
font_02_sfnt_off000081ca.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81CA 4324 bytes

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