Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce16d9c4fbafb734…

MALICIOUS

PDF

39.0 KB Created: 2020-08-29 00:39:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d96ef40b5238890610ed442f192971a SHA-1: fa232d43943f5a1a8f6305346a1af5bfd2c8e1af SHA-256: ce16d9c4fbafb734e96c1e4e57b93df66cefcf596a66ad27d6143b3b71bb0f66
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=belajar+membaca+tanpa+mengeja'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one also being a Shopify URL. The document body, though heavily obfuscated, contains the malicious redirector URL and several Shopify URLs, suggesting a lure to external 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.ru/wix?keyword=belajar+membaca+tanpa+mengeja
    • https://cdn.shopify.com/s/files/1/0432/8010/5630/files/76233768899.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0789/files/boys_don_t_cry_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/ledevuxowubatexolisoxedej.pdf
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/ib_biology_book_pearson.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/java_programming_for_class_10_icse.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/gevevatawenilevuxarifakas.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/dt830b_digital_multimeter_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4416/files/kopow.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/91994369797.pdf
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/gukudum.pdf
    • https://static.usrfiles.com/ugd/b8c837_6938b56e0ada4c10b1e4f861b6c83288.pdf
    • https://static.usrfiles.com/ugd/b8c837_432cfe9ff0eb48fca92d68034e3bf6a2.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_off00005c6d.bin
7c4f551b0d4d025c7ea8704b521b79696cace1f59a411aa57d91f58120ebab19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6D 5340 bytes
font_01_sfnt_off00006e83.bin
5f391d2d2cc8fd8950ace054a77ccdb0a0790f4603acd6255392e2b25e09f3b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E83 9712 bytes

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