Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c164335054b2f26…

MALICIOUS

PDF

41.6 KB Created: 2020-08-23 22:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a47a06433313e6ebebe249c9a602943 SHA-1: efaad768f68f18d81225bf61698b170ecc62497b SHA-256: 9c164335054b2f2623e4855a5f9d2b8a30dba7329c1ade5257710dc1b5240796
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=free+ice+hockey+rink+template'. This URL is presented within the document body, suggesting a social engineering lure. The file also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO manipulation tactic. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be redirecting the user to a potentially harmful site.

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/pify?keyword=free+ice+hockey+rink+template
    • http://files.catheymccrary.com/uploads/1/3/1/8/131871569/zosovukoxizotu-ruvijebexoroza.pdf
    • http://files.deannapaulsen.com/uploads/1/3/1/8/131871704/f0328a91bf25174.pdf
    • http://files.elevensixteenstudioco.com/uploads/1/3/0/7/130775277/xegewulofokop.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/lewiwatiwuzukuxodokuju.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/project_proposal_executive_summary_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/4437/1613/files/problem_solving_theory_in_social_work.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/jutipatidomawef.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0526/files/social_studies_alive_america_s_past.pdf
    • https://cdn.shopify.com/s/files/1/0431/4736/2453/files/include_stylesheet_in_html_page.pdf
    • https://cdn.shopify.com/s/files/1/0438/5954/2176/files/baidu_free_for_windows_8.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/xabadewofi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/arc_length_and_area_of_sector.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/82546663400.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/leviruleliruwajupodaf.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_off0000653c.bin
734b282a5a30daaf8b7477e9af11c2aea1e0b4b93258738a3bd840b3afa0ab9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 5116 bytes
font_01_sfnt_off00007677.bin
945889f15de5dc2c17ba0fc251996d458d6b410e78428e4a72de676470ef521b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7677 10272 bytes

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