Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32148770468e933…

MALICIOUS

PDF

51.3 KB Created: 2020-08-30 11:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0b3d0a2b016bc2c43e00aba0e1901cd SHA-1: 0c1846ac2f16a671b686090d2c7446d1483a59f2 SHA-256: b32148770468e93370b518fe8ab498d8b38ee9132063845ed0925ee643978796
150 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-hosted PDF files, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/wix?keyword=zecharia+sitchin+earth+chronicles+pdf. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be corrupted or obfuscated, but the presence of the malicious redirector URL and the link farm structure strongly suggest a malicious intent, likely related to SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=zecharia+sitchin+earth+chronicles+pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/54174042333.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/pneumatic_conveyor_system.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufowotipopugisafe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/32585040296.pdf
    • https://static.usrfiles.com/ugd/1c90dc_3283504b643a4f9482c9f2aa9c6b5d70.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bce31467cbd47ea8981f461cbed9cf5.pdf
    • https://static.usrfiles.com/ugd/99965f_d0b9979962344a1f97d8ad45261497cf.pdf
    • https://static.usrfiles.com/ugd/455f95_6519c5c8f2184b97b4cbdb6881f6d663.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc7cd52579b4cd58e18835e14608acb.pdf
    • https://static.usrfiles.com/ugd/b8c837_56c69a133a9e4447b6721566e63020f2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/nursing_leadership_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/a._c._a._l._m._e_s._e.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_off00008b10.bin
d21ed70b7e03e75d6c796080713844610401bdbd486d12d12429ddef6cfec8de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B10 5200 bytes
font_01_sfnt_off00009cb5.bin
1e0850b87dae91cde45ee19ad87e389198397f145e726084f4016162f7564eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB5 10524 bytes

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