Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d60a5e8e98e1cd0…

MALICIOUS

PDF

48.6 KB Created: 2020-09-05 10:26:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d122dab9c1a007fc78707721c06dd0c SHA-1: 02cfd65fc0fb0dd7ea11fd1ee338a119154b959f SHA-256: 4d60a5e8e98e1cd00213d5ca7e02283685513c9630ff46b078b92a4eae55ab64
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be part of a SEO link farm. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to trick users into visiting a malicious site under the guise of wellness program information.

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.link/wix?keyword=kultured+wellness+guided+programs
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/52991956990.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7991/files/kavenuvekadif.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/pedarasi_peddamma_kathalu_in_telugu_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0430/8215/4135/files/samsung_tv_secret_menu.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a39722e76d24cc19e2254edd26c2a7e.pdf
    • https://static.usrfiles.com/ugd/c8d394_d5495187265a4e8a81e5e8c64bbbe36a.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/zoligusidipabuwibavuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/xutago.pdf
    • https://static.usrfiles.com/ugd/6dcf04_f198b5a40128492fb70bb8be3cdabc7f.pdf
    • https://static.usrfiles.com/ugd/6846fe_ab64ac1ecdfb4b3ebc96cf462bfa2589.pdf
    • https://static.usrfiles.com/ugd/b8c837_786234e29bcb4c4b8140c880d286c860.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d010525a98245c69b793f0c62bd073f.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/
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/peda

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e02.bin
5a3deb51ca0314f52935e846195bd5a268e72fe36aa9476fdeb9d34721e6fa2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E02 5340 bytes
font_01_sfnt_off0000902d.bin
b1fae80124ef59bb567d6dbcd9e2b5d436d28837dce7333b82d3f1df90f5e588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902D 11084 bytes

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