Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b59199dc4e40f6…

MALICIOUS

PDF

33.4 KB Created: 2020-08-23 14:49:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4457c65fd305fe216ae3e24a9c3066a6 SHA-1: 23cb8c0077e3739b649cd4a4b4a84af188c8edec SHA-256: e9b59199dc4e40f60e75f217a1beb1a07e88bb2b191cc6ace338654e059d1e9d
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 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, likely part of a link farm to improve SEO for malicious content. The primary malicious URL is used to redirect users to potentially harmful 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.ru/pify?keyword=el+dorado+county+sheriff+crime+reports
    • http://doxota.mrsjonescoldbrew.com/uploads/1/3/0/7/130776088/vazisizunizilil.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/31123389945.pdf
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/11095751157.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/vocabulary_words_for_pte.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/florida_general_affidavit_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/58213249990.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/dedupetepuwom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rajijabobuzev.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/codewarrior_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/keep_mac_from_sleeping.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/rokoxojigazazawominawu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/75084004731.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_off00004382.bin
d2cfbb581a977bb4dda41d93a9051d1e4d5b17152ba09cb312c6b5e787d4344f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4382 5452 bytes
font_01_sfnt_off000055ed.bin
e51c39242b64d960e3c5a1f6e30a1c47906144daaf5d8bfd9caf05292aea886e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55ED 10660 bytes

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