Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bd78081b5895b34…

MALICIOUS

PDF

54.7 KB Created: 2020-08-24 02:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a5894174e46e0875300211874fb8d39 SHA-1: d5e278fc03e46b2339ca23b089491673b74fea85 SHA-256: 3bd78081b5895b348e697b7f3b5b178d5121fef45a6a26461b0035060d7b57a7
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This suggests the document is designed to lure users to malicious infrastructure, potentially for further exploitation or phishing. The presence of a malicious redirector URL is the primary indicator of malicious intent.

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=asking+formal+questions+in+english
    • http://files.palmcoastbaptistchurch.com/uploads/1/3/0/8/130874284/newitute-kegugiwubopin-lawusur.pdf
    • https://cdn.shopify.com/s/files/1/0439/4768/8091/files/short_adjectives_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/8960/7321/files/vozaredamujatemibad.pdf
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/history_of_islam_religion.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/37189036700.pdf
    • https://cdn.shopify.com/s/files/1/0428/1778/1927/files/25188725866.pdf
    • https://cdn.shopify.com/s/files/1/0434/6553/9741/files/8708497808.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/52991956990.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/zufisubowiriduvumuzere.pdf
    • https://cdn.shopify.com/s/files/1/0448/6198/0834/files/82000439619.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/how_to_find_circular_reference_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/voxetojetazabe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8251/4581/files/todas_as_aberturas_de_xadrez.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_off000097f3.bin
519e49ce0b10aacf7390449d5a87e2f6a7114fc88b03dc62fc73c0a86c6a4b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97F3 5360 bytes
font_01_sfnt_off0000aa03.bin
27d8c99c83933cf158eb22a61dbf4d65bcff1f6574f9d3bb839f147b7ee71d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA03 10516 bytes

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