Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee0dbc30d824953c…

MALICIOUS

PDF

42.5 KB Created: 2020-09-02 00:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5578862900eee42be62a859b4e4d430f SHA-1: 25d0a81f30cce2cdcec6a7df23c6e958d603fa6f SHA-256: ee0dbc30d824953c3e6a3da20a3b5b522e06a863a5dc833db554407d0cdae111
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body text, though heavily obfuscated, includes the phrase 'Workshop facilitator guide template' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous benign-looking Shopify links alongside the malicious one is a common tactic to blend in.

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=workshop+facilitator+guide+template
    • https://static.usrfiles.com/ugd/0baf77_233d125579a24341bad0829f03598913.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_7a5b3d322d5c427d80e5540452a2e459.pdf
    • https://static.usrfiles.com/ugd/b8c837_e92239d1f71f462a970f23ad998aaf7b.pdf
    • https://cdn.shopify.com/s/files/1/0428/7794/3967/files/agile_software_development_process.pdf
    • https://cdn.shopify.com/s/files/1/0435/6174/6595/files/physical_oceanography_books_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/frontier_airlines_carry_on_information.pdf
    • https://cdn.shopify.com/s/files/1/0428/5887/2998/files/writing_instructions_worksheet_year_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35035436777.pdf
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/crimson_and_clover_chords.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1909/files/fabupamumoxos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/sefiwedefosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77439678162.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/nirusenetunilazefewu.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_off000066cd.bin
4477b0fae5ced8ff442b61ec6c33c25c5fc18e5a70dff5c81a3e2e53e874f4b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 5648 bytes
font_01_sfnt_off000079e7.bin
6069bbd7c3213e8e53bcddb6653f1b51eccd7f9d0678f8d18515efb896496056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E7 10304 bytes

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