Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a6602f6991fdfc…

MALICIOUS

PDF

37.7 KB Created: 2020-07-27 18:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58aa72cc2693905668ef0dc9fd199430 SHA-1: b33aaa80895fa7ba73f9837f97b92c6a60545549 SHA-256: 24a6602f6991fdfca5251907d6c462725a5eaa3162e66c85ad63edd7b1c4f696
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 hosting other PDFs. One of these links, however, redirects to a known malicious domain (ttraff.com), indicating a phishing or redirection attempt. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is to host these malicious links.

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=foam+insulation+sheetrock
    • http://files.tacomateasandherbs.com/uploads/1/3/0/8/130814907/jinalameruvuwibisi.pdf
    • http://files.heartofiowabigs.org/uploads/1/3/0/8/130813614/f9a76324cbc.pdf
    • http://files.beautiquestyles.com/uploads/1/3/2/3/132302736/dapudufisosikeziveni.pdf
    • http://files.beautiquestyles.com/uploads/1/3/2/3/1323
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/rogetoxamapodasuzoze.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/xedepakazusupupiwulafona.pdf
    • https://cdn.shopify.com/s/files/1/0439/2294/8251/files/razetanefipiravumijonilas.pdf
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/18442190651.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/26237315173.pdf
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/tudetini.pdf
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/wikatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3319/0823/files/24210229563.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/73904050293.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/46049890673.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_off00005768.bin
d4b422a5cd432dc59caf8e400eb58ec0ea95ebd02e088359ff5f21c76ea537ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5768 4940 bytes
font_01_sfnt_off000067f8.bin
4d4855236d969996edbfa4dda05c5bbe300fd3808e8710df10af43d4e4610511		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F8 9924 bytes

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