Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d253c62bfdf7cd…

MALICIOUS

PDF

33.3 KB Created: 2020-08-14 12:46:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6988526021e9284f7aeeb198d890d0cf SHA-1: ae43a4b52a8d881b2fe6985ad5235abcd1a9b449 SHA-256: 27d253c62bfdf7cd5989817a1c94c2a349aa0dc8f6a9afcb861a4a24a3285084
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is identified as a redirector, likely leading to further 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=bunch+of+red+roses+pics
    • http://files.chrisdorsett.com/uploads/1/3/1/0/131070841/fuzunipatabu-josovoxukenaxag-govikevakikam.pdf
    • http://files.estellejorgensen.com/uploads/1/3/0/8/130814238/6ecd8fd46.pdf
    • http://files.mickeysironworks.com/uploads/1/3/2/6/132695388/sefexu.pdf
    • http://kixux.visuallyaccessiblecities.ca/uploads/1/3/1/4/131406286/nowal-nigete.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/formation_of_joint_stock_company.pdf
    • https://cdn.shopify.com/s/files/1/0431/6977/5782/files/conductive_atomic_force_microscopy_applications_in_nanomaterials.pdf
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/stripe_test_credit_card.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/4799741074.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61238086127.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/kazukefugibajozetowororur.pdf
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/nilala.pdf
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/bookkeeping_journal_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/sasapuxulimusepu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2560/2472/files/45642303997.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/logiwerepovufurunoxezeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/lutikowekuwemegomixaded.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_off00004741.bin
af17ec612c2e9a32cb9484c31ae7f1b7e635bb21bab43babdb4664482fbf7a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4741 5048 bytes
font_01_sfnt_off00005868.bin
e9042b5889fac61d6ea869886af0f940c5cfd5a76df4a362b388ec6dcc5efc0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5868 9428 bytes

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