Malicious PDF — malware analysis report

Static analysis result for SHA-256 5430d8bb53303ee7…

MALICIOUS

PDF

46.4 KB Created: 2020-09-07 07:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7d50cd485a3e822171c01738d346d4 SHA-1: 985115eff235239b14318672d9ed4468ff88600b SHA-256: 5430d8bb53303ee7f774d32259e0095fe9f725ad88190ae09709b5cc5b53d469
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.link'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to a Shopify domain. The document body, though heavily obfuscated, contains text related to 'Oblivion theme piano sheet music' and the redirector URL, suggesting a lure to entice users to click the malicious link. The presence of a malicious redirector and the link farm structure indicate a phishing or malware distribution attempt.

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.link/wix?keyword=oblivion+theme+piano+sheet+music
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/pokemon_sun_shiny_breeding_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0835/files/gutazorafewomupuvalediri.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/anatomy_and_physiology_coloring_workbook_chapter_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/86943653168.pdf
    • https://cdn.shopify.com/s/files/1/0429/4118/6215/files/conic_sections_problems_and_answers.pdf
    • https://static.usrfiles.com/ugd/3d514e_44263344e2004f6486ceef79302bfb69.pdf
    • https://static.usrfiles.com/ugd/3794ad_290a54d9829a45ad9fc1312a36e69861.pdf
    • https://static.usrfiles.com/ugd/078c79_242d2d6cc8a84c94b39d3b2a574c1234.pdf
    • https://static.usrfiles.com/ugd/74e9cf_44fa00894ec1448f90dc2ea36d8f1048.pdf
    • https://static.usrfiles.com/ugd/1813b3_df50ed260df243a4ae0e59c71cccc20a.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/febumidozom.pdf
    • https://cdn.shopify.com/s/files/1/0433/1103/8632/files/kufator.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/14622314124.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/entertainment_news_hollywood_reporter.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_off00006a50.bin
a89cf3d0b9d576eeece1b86aa3ae5b3159a8e3d3bc57a94e86710781edc001a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A50 5304 bytes
font_01_sfnt_off00007c30.bin
a6829050d410d822290a49bf725b2b0d981ff81605409ff3456d6c306bb3c78b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 15132 bytes

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