Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1964562d6bbdc75…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 00:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dcfec0be7f752da61526dd8dd4877ac SHA-1: 08ec49db6c8dc65e7ee100010548b5213312fd48 SHA-256: c1964562d6bbdc7571e2bd261be52243239b301d070570aab729fd50e4a1a720
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=house+party+lighter'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking PDF links, suggesting a social engineering attempt to direct users to malicious infrastructure. No scripts were extracted, and the file type is PDF, indicating a likely phishing or redirection attack.

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=house+party+lighter
    • https://static.usrfiles.com/ugd/dc98cc_af9abcb99b2045a4b5a6ee484c183828.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad9832d2efd24c09924b5cce1a436411.pdf
    • https://static.usrfiles.com/ugd/0511f5_406a8ef3c3aa409699553c310441adf9.pdf
    • https://cdn.shopify.com/s/files/1/0461/1037/6099/files/questions_from_a_worker_who_reads.pdf
    • https://cdn.shopify.com/s/files/1/0454/1985/6028/files/semawozometipir.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/57743354869.pdf
    • https://cdn.shopify.com/s/files/1/0439/9369/4366/files/mugoxuwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/fl_studio_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/matshita_dvd_ram_uj8c0_driver.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/all_formula_in_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/bizij.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2975/files/6908891391.pdf
    • https://cdn.shopify.com/s/files/1/0444/1692/5863/files/95853472147.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_off00006754.bin
650280c8297473e0da0b7f5d1663e1355fdd5ab42f431d6a9734bb63b8a28eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 5144 bytes
font_01_sfnt_off000078d7.bin
c879089c1379604c7e32f258d490fdc7a5fc1532d82a6c4497c3994fb9698a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D7 10144 bytes

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