Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfeb15ae3ecb35e1…

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 19:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7212835e8da897e984bc67e413f2af83 SHA-1: b4052e768fcf5e617a1bd8de741066dccaeecb77 SHA-256: cfeb15ae3ecb35e1d534e1133423c682b510d5d9ad72be6a06ca8f7792b4be2e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wix?keyword=goal+sheet+appraisee+comments'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one pointing to a Shopify domain. The document body, though partially corrupted, suggests a lure related to 'Goal sheet appraisee comments'. 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.cc/wix?keyword=goal+sheet+appraisee+comments
    • https://cdn.shopify.com/s/files/1/0430/5249/9095/files/jerugejunowip.pdf
    • https://cdn.shopify.com/s/files/1/0465/5310/4542/files/laney_sammons_guided_math.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/fiwenimun.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9709/files/junokitiru.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/ctet_question_paper_2_2020_download.pdf
    • https://static.usrfiles.com/ugd/7c30af_906166ac751c47859a19c56ec2c384f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_503930efaa134338ab701eb24487daf0.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c8d9e87ee584bd994147cb4599f4767.pdf
    • https://static.usrfiles.com/ugd/912de2_304e6e7dc5c84154ab3c1c65815e865e.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/dezelo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/dedolesajid.pdf
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/sejolijetawetapalixinuza.pdf
    • https://static.usrfiles.com/ugd/b8c837_72cc1246067b4cd991c67cae9893d339.pdf
    • https://static.usrfiles.com/ugd/39d081_2dde34b4827b4170a78814091784e864.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_off00006e7b.bin
8c1bb1dc5509d5b085f8f4b5f3406cb6d3be79356eece7e8e3630da9406ea1cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 4992 bytes
font_01_sfnt_off00007f43.bin
9fa52548c66beb341d769f591e133e9200ac55711425d442a1b576c7a041b007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F43 10060 bytes
font_02_sfnt_off0000a177.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA177 4324 bytes

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