Malicious PDF — malware analysis report

Static analysis result for SHA-256 2422c3fcfa571eef…

MALICIOUS

PDF

35.6 KB Created: 2020-08-23 14:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee1800632d60df59190d668df1e9200 SHA-1: d2a62fb7b485207a83662fa4e027f178d86832a5 SHA-256: 2422c3fcfa571eef6109ae33d0f9ced5bd0009782aa2f9994899108b119f454d
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, with one identified as a malicious redirector. The document body is heavily obfuscated but contains the malicious redirector URL and several benign-looking URLs hosted on Shopify. This suggests a link farm or redirection attack designed to lead users to malicious content.

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=charkha+gama+da+song
    • http://doxopaf.paultubig.com/uploads/1/3/1/4/131437615/7359123.pdf
    • http://files.joshgellers.com/uploads/1/3/1/3/131383493/mejuwegog.pdf
    • https://cdn.shopify.com/s/files/1/0441/0572/8152/files/infant_tylenol_dosing_chart.pdf
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/how_to_conduct_research_project.pdf
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/sogepujurusirejofoginep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/77602527236.pdf
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/66988870987.pdf
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/59128563304.pdf
    • https://cdn.shopify.com/s/files/1/0437/8601/0776/files/budunuripojomakifopozez.pdf
    • https://cdn.shopify.com/s/files/1/0445/8260/0868/files/rufixufawagulirudosabeba.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/biophysical_chemistry_cantor_schimmel.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_off000043e1.bin
b0c9409866adae6e86b791ba503602d6a08b4ece88ac9804d75da8360901d52e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43E1 5176 bytes
font_01_sfnt_off00005556.bin
824a5c0e8230989b55843bf4d90b1d6381fb090fe0f42724acaca88d357bbb4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5556 14488 bytes

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