Malicious PDF — malware analysis report

Static analysis result for SHA-256 239df953af3d7f3b…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 07:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6980d623410595ca8de06878702dcd73 SHA-1: 52b99e03d7bae88b3d91fe01d85ce2c66b8cf047 SHA-256: 239df953af3d7f3b13050b486f3fbf1ab1a8303efa5ef31ec4d71038a3013e5d
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, disguised as a PDF compression tool. This is supported by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body contains the URL https://ttraff.com/pify?keyword=compress+a+pdf+file, which is likely the initial lure. The file also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve SEO for malicious content.

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=compress+a+pdf+file
    • http://files.hjdbc.com.au/uploads/1/3/1/4/131438137/xinefitenetu.pdf
    • http://files.theragirl.com/uploads/1/3/1/3/131379899/00d774a95e7a11.pdf
    • http://files.maryannefrederick.com/uploads/1/3/2/6/132695339/9155608.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131379612/lufuxofuwusuwufaposi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/fedis.pdf
    • https://cdn.shopify.com/s/files/1/0439/3975/8235/files/24478335304.pdf
    • https://cdn.shopify.com/s/files/1/0430/2569/4883/files/zawesosogurupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/fasiwaxuwufot.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/zotojodasowaset.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/xinalanunojemafirezus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0432/9125/files/79297162060.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/46724904675.pdf
    • https://cdn.shopify.com/s/files/1/0431/7485/4820/files/65969562262.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/zezoxelafa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9083/6645/files/55478822535.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.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_off00006da0.bin
763c81a407164a2b23bcef5084ddc1b5e1dcd18ba0ff00e9333c1743b9a7416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA0 5092 bytes
font_01_sfnt_off00007ed0.bin
4d12c10930c2cf29138bba89c0ec63ab3ad6bcf149fd9454df70b43ab3fe809d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED0 10580 bytes

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