Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b466c05970fca91…

MALICIOUS

PDF

45.9 KB Created: 2020-08-29 17:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523b2ec3fae3e3af572a440823485b12 SHA-1: 97a253fac5d375ea19ce5176fefab52da854fc1b SHA-256: 4b466c05970fca9192e82876383fa5610a167e23ebd7ee47b09986ed78644376
180 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. Another critical heuristic indicates a PDF link farm, with the primary link leading to a Shopify domain. The document also explicitly requests recovery secrets, private keys, or backup codes, indicating a phishing or credential harvesting attempt. The presence of a malicious redirector suggests the document is designed to lead the user to a malicious site for further exploitation.

Heuristics 4

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/wix?keyword=active+directory+certificate+service
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/28996236915.pdf
    • https://cdn.shopify.com/s/files/1/0467/5190/8003/files/.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/22._1_disclosure_form_illinois.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0c0193e9c7246ddb5585ce6045ff1ff.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/nufufozemuzewe.pdf
    • https://cdn.shopify.com/s/files/1/0452/1210/6912/files/synonyms_worksheets_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/62378176547.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/naming_binary_covalent_compounds_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/benim_hocam_maliye_video_ders_notlar.pdf
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/the_fifth_wave_rick_yancey.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/34189790988.pdf
    • https://cdn.shopify.com/s/files/1/0465/1116/1494/files/8263261455.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_off00006eae.bin
715bdb72fc71ef7eddf857784f54e418f7fa519e6e412b9aaf84de9c35c81844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 5136 bytes
font_01_sfnt_off0000803a.bin
f3f03a820bcb68563caa162cc791cf8c8e041b62b468c4035bb5ceceffc6825d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x803A 13344 bytes

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