Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a87eb845e3eaa9…

MALICIOUS

PDF

57.3 KB Created: 2020-08-05 08:20:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b86474db6d9d7014cbd856c595e3c15 SHA-1: beb67df3b61d938986fe0fd0f2227b835e5bffa7 SHA-256: 75a87eb845e3eaa9d86c2467fdd0745520aba5e99d78cd9a3fa716a82b5c85db
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=bwv+1007+violin+pdf'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

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=bwv+1007+violin+pdf
    • http://files.peaceoffaith.net/uploads/1/3/0/8/130813042/pizaw.pdf
    • http://files.visionworksmultimedia.com/uploads/1/3/1/3/131379183/mivenuzigufogoweb.pdf
    • http://files.nimehime.com/uploads/1/3/1/3/131379353/zolebonojobatano.pdf
    • http://kagabamid.waxent.com.au/uploads/1/3/1/8/131871699/5767512.pdf
    • http://files.vanvliet-kassenbouw.nl/uploads/1/3/1/4/131483097/mosozojejo_zazeletexo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/29915329964.pdf
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/61175448966.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/income_tax_amendments_in_budget_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/95956636880.pdf
    • https://cdn.shopify.com/s/files/1/0428/8751/2220/files/job_vocabulary_esl.pdf
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/xerezolisesu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/articles_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/wetuzubunowiwubuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2532/files/zapinimisotunisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/yu-_gi-_oh_5ds_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/sagurexa.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_off00008ec2.bin
b06098e52e6f4e48991d033c0b9a5faad99dba00c09f83db5c519bc940aa85eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC2 5024 bytes
font_01_sfnt_off0000a023.bin
bcc8c66be1fa93f329f1507a2eb8241b39f3910392fe8ba461c3b83a9f287806
pdf-font-stream PDF embedded font (sfnt) at offset 0xA023 10120 bytes
font_02_sfnt_off0000c303.bin
fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xC303 16120 bytes