Malicious PDF — malware analysis report

Static analysis result for SHA-256 af8598c414518edb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-18 22:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4552cae283e5fcf67119b975225ba6d9 SHA-1: d104879aa3cd16eea93dd015598fdd694950c89f SHA-256: af8598c414518edbafc4c7be160ed3c9a409af0f781e5805847426dc8825ba4c
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 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, likely to improve search engine ranking for malicious content. The document body contains the malicious URL, suggesting a social engineering lure to download a book. 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.com/pify?keyword=margaret+atwood+the+testaments+pdf
    • http://zewinas.neilbushby.com/uploads/1/3/0/8/130874222/7044925.pdf
    • http://fesofoxe.iwshelter.org/uploads/1/3/1/3/131381497/7502045.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/bootstrap_shopping_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/54738147415.pdf
    • https://cdn.shopify.com/s/files/1/0432/7440/3996/files/31971916789.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/xiputudowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/jenifobererojajuludek.pdf
    • https://cdn.shopify.com/s/files/1/0435/6040/3103/files/aeronautical_engineering_textbooks_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8901/0593/files/lematexikixoru.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/25664530512.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/repedajuxaxaloragofe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdf
    • https://cdn.shopify.com/s/files/1/0434/3457/3991/files/73108977680.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_off00006950.bin
4666f45cd4c61bc6ef912f32d9b9dc44602a8e5f4c892bd65e8c4b4d28eaec06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6950 5520 bytes
font_01_sfnt_off00007c0d.bin
57c9a7d3803fd0b3971e79303fc2e7c1162fa020323a557570be37d9077e2d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0D 10076 bytes

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