Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b1e78a2327b3f0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-19 07:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c84e78c134914a2a4b0e62c4c5b09d2 SHA-1: 3fa41755a4407bacbd31a2160e51a078504579a6 SHA-256: 45b1e78a2327b3f0cab8540271ea71a7831257a00ec4716dd4dddc4e72e412c4
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=guide+catheter+selection, which is likely used to redirect users to a phishing or malware-hosting site. While many Shopify links are present, one is flagged as a malicious redirector, indicating a probable attempt to obscure the final malicious destination. No scripts were extracted from this sample.

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.cc/pify?keyword=guide+catheter+selection
    • http://files.caffeamouri.com/uploads/1/3/0/7/130775953/3c023aa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9590/6721/files/wamafopawubis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/arguably_by_christopher_hitchens.pdf
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/90903134819.pdf
    • https://cdn.shopify.com/s/files/1/0437/1434/7160/files/50419722564.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/dakika.pdf
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/chrome_viewer_hide_toolbar.pdf
    • https://cdn.shopify.com/s/files/1/0437/8371/7015/files/85163295849.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/34334152063.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_off00005e37.bin
bc5b89ca544b08718704267672a869195605de04ba667a641d2c6043411e5c03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E37 5056 bytes
font_01_sfnt_off00006f58.bin
453c9f77692469cde528b00c0c141ad1f75a2bbeef63ba1a11f389360d2e7042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F58 10208 bytes

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