Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01beafafc7e7274…

MALICIOUS

PDF

35.6 KB Created: 2020-09-01 01:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f41403214f464b5e8d732849dd15d11 SHA-1: 47e6a1e9a76930380325b3fabcd99105028d32a2 SHA-256: b01beafafc7e7274223facf3a64fc502a78106ae6447e3aeb2fad279a71656b8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/wix?keyword=chhaila+bihari+ke+video+gana, is flagged as a malicious redirector. The document body contains garbled text along with this URL, suggesting it's a lure to redirect users to malicious content. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

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=chhaila+bihari+ke+video+gana
    • https://static.usrfiles.com/ugd/824332_0c3347ce120a4bad8b53dbfe0bc16eb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea1fb4191b574145802eeb00d14fb208.pdf
    • https://static.usrfiles.com/ugd/b8c837_59576f33e5104edd9ab1cbd62367a1f5.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/possessive_pronouns_and_possessive_adjectives_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/2779/8943/files/old_hunter_bone.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/short_term_memory_worksheets_for_adults.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5961/files/wikeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/riginimakepavizez.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/animal_totem_singe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/b_tech_agricultural_information_technology_jobs.pdf
    • https://cdn.shopify.com/s/files/1/0435/2763/5095/files/hepatitis_c_genotype_2_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/nuwugufosivuwokewakojis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/capella_scan_6._1.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/vimeronelurelafibapif.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_off00004fc2.bin
83d3edd2378c9eb2d0afe8d7c415c2b0ec9dfe035c517aa3bc4bc93abb0c77a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 5080 bytes
font_01_sfnt_off00006103.bin
2b83f8c21bc3551a9c06a4304c916c61ef12356286bcdf68ea7916c59e83e58e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6103 9500 bytes

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