Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c292ddd0b0cd12f…

MALICIOUS

PDF

45.1 KB Created: 2020-08-05 08:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a8532ca87eb67526ddcfacc821a771 SHA-1: b7b681b57e062c52adc8250bf5e270c1433c4de6 SHA-256: 8c292ddd0b0cd12f6f30d3fabbeab215a3bdcc381fe7e3786a10935f3ac43ab4
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 external resources. One critical heuristic firing indicates a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=caracteristicas+de+la+reaccion+antigeno+anticuerpo+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous other links, including to Shopify domains, further supports the 'link farm' heuristic, indicating an attempt to manipulate search engine results or distribute content widely.

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=caracteristicas+de+la+reaccion+antigeno+anticuerpo+pdf
    • http://files.juiceboxcafe.com/uploads/1/3/0/8/130814076/91b183f90be.pdf
    • http://files.deborahshulmanmsw.com/uploads/1/3/1/3/131398253/aecb0d5.pdf
    • http://files.ketowithgrace.com/uploads/1/3/1/4/131406930/1018017.pdf
    • http://files.rebeccalynnphotography.net/uploads/1/3/0/8/130874518/4840188.pdf
    • http://files.dedunlop.com/uploads/1/3/0/7/130775997/5111209.pdf
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/84968723827.pdf
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/11077454364.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/zamatuzeva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/gizege.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/78296179757.pdf
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/90285108792.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/5232346204.pdf
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/tadofatoxuzidoveluriwibum.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/82392978908.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.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_off00006eae.bin
a86855a0096b5d2460e157b874c771be8ef767ad41efbd8e35051e9030079a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 5228 bytes
font_01_sfnt_off00008081.bin
4e35eabc2c51d5c5a20f22c2ab14dd49130e53fe1651c11c912e57504f158cdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8081 11364 bytes

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