Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2bc76bad823dc52…

MALICIOUS

PDF

35.6 KB Created: 2020-08-29 22:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 194f62e5bf24f93b51fb29d89e2318da SHA-1: 574e8d4669cb7f26cc94a3e74d4a9288d9ba9771 SHA-256: c2bc76bad823dc52039ccc00c916a6dd0b7dc751bdadf7fbf5ffde3172a0370f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Draconian ritual book pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link indicates a likely attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=draconian+ritual+book+pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/gedotawifomaxalox.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9453/files/tazatuxixakov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/troy_bilt_lawn_mower_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2682/files/articles_of_organization_michigan.pdf
    • https://cdn.shopify.com/s/files/1/0431/9523/6513/files/gabumefomapixajuwos.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/small_fry_lisa_brennan_jobs_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/28112363208.pdf
    • https://cdn.shopify.com/s/files/1/0429/2159/0951/files/91395292592.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/rigumakapilop.pdf
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/angiofibroma_nasofaringeo_juvenil.pdf
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/jotiwolubixujero.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/30918340146.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/nrsv_bible.pdf
    • https://static.usrfiles.com/ugd/b8c837_c080850913a1470aabe575ec17ed4d95.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d20a3fe6cb94fe98d3abbb09b34781c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d16976069f194bbc8d388cb05b025464.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf1d3b3c9dd942bebb994c58f31876c5.pdf
    • https://static.usrfiles.com/ugd/e2c250_e7eca5081d2b4588a2d5c1d08f2e8910.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_off00005153.bin
91e5309d156d0d3361463f4b6c7d39b6d548c1ea9218088d3313966f12e404b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5153 5172 bytes
font_01_sfnt_off000062ef.bin
f30108340706a6be17a34d9a42ad9b7f8f0766e1b482f8f3e3b14353a5a630a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 9028 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.