Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c6e4d449e9da9a…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 22:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc5b4fd75e640e891359ebd537f63269 SHA-1: 2bd6dc86f2df9b2b4ee83e7b1f55279ed27346f7 SHA-256: e3c6e4d449e9da9ad194da68b233a5f8e7f2385034e36ef207d58a5f38dc4592
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a "Messenger app 2018" lure, which is designed to trick users into clicking it. The link redirects to known malicious infrastructure. The document also contains a large number of embedded links, many pointing to shopify.com, suggesting a link farm or SEO poisoning attempt to distribute malicious content. No scripts were extracted, limiting the analysis of further payload delivery.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=messenger+app++2018
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdf
    • http://files.thevirtualdis.com/uploads/1/3/0/7/130738714/4228464.pdf
    • http://files.logans-heroes.org/uploads/1/3/0/7/130739614/700476580d51.pdf
    • https://cdn.shopify.com/s/files/1/0431/5509/5716/files/55545885106.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4974/files/59440024422.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/xipuwumezusufawer.pdf
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/velekamokesevob.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/wuwobimotedusefuxagok.pdf
    • https://cdn.shopify.com/s/files/1/0439/1701/7256/files/zegazelumoraroxufoguza.pdf
    • https://cdn.shopify.com/s/files/1/0436/3173/9033/files/kepavasuvukebuvapiremepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0394/4853/files/lepidoptera_species.pdf
    • https://cdn.shopify.com/s/files/1/0435/3579/4340/files/architectural_ethnography_atelier_bow_wow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/wikagakepuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/77832693424.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_off0000654f.bin
eed1c67c68a46e20d16533033f1f2f5a24d54e37f8be979447ee30b0331bcfd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 5480 bytes
font_01_sfnt_off00007803.bin
ce624e09572de33f38815e272104c3f708d479a92e257abbd4139a3d929013f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7803 10292 bytes

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