Malicious PDF — malware analysis report

Static analysis result for SHA-256 99bfd9f7e23b6863…

MALICIOUS

PDF

34.0 KB Created: 2020-08-19 04:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65ffdbf3d325cac3bd95800e870bf6df SHA-1: 194d7d3d6d3b03d59af42522809b8eeffd6f6845 SHA-256: 99bfd9f7e23b6863ccf38e1d5d8b0a1e8260c28f34e8cc069d934ea8bf1c3650
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm designed to improve search engine rankings for malicious content. One critical heuristic identified a direct link to a known malicious redirector: https://ttraff.cc/pify?keyword=bread+of+life+bernadette+farrell+sheet+music. This suggests the document's primary purpose is to lure users to malicious sites, potentially for phishing or malware distribution.

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=bread+of+life+bernadette+farrell+sheet+music
    • http://files.merrifieldseminar.com/uploads/1/3/2/7/132710655/7749287.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/1479546308.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zokiwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6886/7231/files/kashmir_history_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/9690184389.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/zafim.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0494/files/foriburalojubobebowade.pdf
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/bodhidharma_book_of_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/wedijiza.pdf
    • https://cdn.shopify.com/s/files/1/0454/8014/9144/files/61920280370.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/wujusutowekunenukefepa.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_off000046cb.bin
bc9854c0b40ee814e6953f1fd1b24bfb8f1ad5fc7eb969c7df867d1f781817e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46CB 5452 bytes
font_01_sfnt_off00005923.bin
a9922e62c7a575cbd494f4d473053abfa161674010e67228733f022dde9fe4b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5923 9940 bytes

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