Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d3f076a85bf7a9…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 19:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e5240839c45fe4d8a5f67fe8e86f6e6 SHA-1: a072856667a418f3dcb056d9aa595a89a525506b SHA-256: 29d3f076a85bf7a933d367a2f58177c3ffb29cb936348ca97efd69eeee71d935
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a redirector URL, indicating a phishing or malicious redirection attempt. The document body, though partially corrupted, mentions recycling and includes the malicious URL, suggesting a lure to a potentially harmful site. The presence of numerous links to external PDFs, many hosted on Shopify, further supports the link farm heuristic.

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/wix?keyword=cual+es+la+importancia+de+rechazar+reducir+reusar+y+reciclar+metales
    • https://cdn.shopify.com/s/files/1/0432/7184/8100/files/campbell_biology_reece.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdf
    • https://cdn.shopify.com/s/files/1/0439/9664/3486/files/mimupowezigofavusikalar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7291/2549/files/sarezuwugawevejegelexiwet.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/jojumij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/91538270113.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/20962232853.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdf
    • https://static.usrfiles.com/ugd/b8c837_c600590d24314c688e96f21fb110b748.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_b17145645baf4775baecd650d7a99d6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c48b819a10ad4545aa8b515cefbe50bf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0971/2021/files/bhu_bsc_entrance_exam_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/9540096250.pdf
    • https://cdn.shopify.com/s/files/1/0452/1289/3344/files/22484942119.pdf
    • https://cdn.shopify.com/s/files/1/0430/1117/8649/files/32760217236.pdf
    • https://cdn.shopify.com/s/files/1/0463/4066/9602/files/7070816073.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_off00005fea.bin
56b80a43a3651787782b46d353c8c1ae5d132e20817a608ca81b8221ca973d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEA 5372 bytes
font_01_sfnt_off0000720d.bin
d8fc10bf761927d46e13a84c9d73c131248a36063746c15d1b7fa56041521fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 10508 bytes

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