Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d05c62f573ee10…

MALICIOUS

PDF

99.7 KB Created: 2020-08-29 05:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a19aa0d5c7d94d03ec3386ef4d57486 SHA-1: d75487957f4f4c4df8ae8404711a3f7108b9bd92 SHA-256: e2d05c62f573ee107e166348c7a12d4ec25de49d418ca2e6e8bfa48287ba4e6c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO link farms to drive traffic to malicious sites. One such link, 'https://ttraff.ru/wix?keyword=analog+storage+oscilloscope+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect users to potentially harmful 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=analog+storage+oscilloscope+pdf
    • https://cdn.shopify.com/s/files/1/0430/9696/5269/files/bsc_physics_2nd_semester_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/business_english_vocabulary_cambridge.pdf
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/adding_fractions_with_unlike_denominators_worksheets_with_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f19988edcee4f85a9c29f7c89c210ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_464e5ac5559d42a2a350eb3a5e43b3a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddcf71396a3c463a99180d85e72960ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_8bcff15cfa1c4370b1d950ab64693aab.pdf
    • https://cdn.shopify.com/s/files/1/0428/5507/1900/files/annihilation_of_castes.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/rolisuwopi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6524/3803/files/maderonavevolisoke.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4708/files/681503005.pdf
    • https://cdn.shopify.com/s/files/1/0429/6605/7116/files/sowonun.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_off0001425a.bin
ffb114b8adc300ae0053769b7b7e3f9a096cc51c88a7da511f5bcc555b3bd5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1425A 5312 bytes
font_01_sfnt_off00015472.bin
c6fc88d55cb957f8daf6685997a9f897c7898fe89bfd2f1e9e3bbe7685522676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15472 14400 bytes

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