Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c00b99aec0e0c3…

MALICIOUS

PDF

35.4 KB Created: 2020-08-20 22:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e561ffabb60d136a95c828f6895e69 SHA-1: 60f29417ef4fc33532281f1b427699af3318e6b7 SHA-256: f2c00b99aec0e0c3131844d87dc9920593433f0b777f2dbfcb440e6b22f20a25
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=epi-+derm+silicone+gel+sheeting'. This URL is embedded within the document body, suggesting a lure to a malicious site. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify-hosted PDFs. While most Shopify links are benign, the presence of the malicious redirector indicates a phishing or scam attempt.

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=epi-+derm+silicone+gel+sheeting
    • http://zowepisem.traveltailsbooks.com/uploads/1/3/1/6/131606339/7096236.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/financial_awareness_june_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/patigevedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/setunuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/8175/0941/files/3285221607.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/tumete.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/57540534576.pdf
    • https://cdn.shopify.com/s/files/1/0441/1647/6056/files/viloderubewuwemizivowodaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5963/4591/files/tonajotixekosudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/53978490531.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.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_off00004e13.bin
112dc633f1f5411eef163a1c290990837dd60c84f402c6cb597c34cfb67e7694		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E13 5268 bytes
font_01_sfnt_off00005fd6.bin
079186a27d0740859d98646211e436ab3a7d2002d292ffd0ea9617b76df3caf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 9740 bytes

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