Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fa40d6b3a5b84b…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 04:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e079f92458f95c0d3026a96d1018ea31 SHA-1: 2ce25dcb4bf480842229eee024a4ace2fc367067 SHA-256: f2fa40d6b3a5b84b1b4048076000296f6307fd966cbb5f2e4ccdb17c3ff966e9
154 Risk Score

Malware Insights

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

This PDF file contains a link that redirects to a known malicious infrastructure, specifically ttraff.ru, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to "John Deere tractor canopy" and the URL itself, suggesting a lure to trick users into clicking the malicious link. The PDF also contains a large number of external links, many pointing to shopify.com, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=john+deere+tractor+canopy
    • https://cdn.shopify.com/s/files/1/0437/7395/2158/files/french_revolution_class_9.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/lewasifazijogaxeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/senememikuma.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e95fec18a414b6698e1d9e79c1d23d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_754389c3fe49474483e0c5960eceea09.pdf
    • https://static.usrfiles.com/ugd/e2b09b_6f5f014b4f4e4c758c0b378ae7a8d789.pdf
    • https://static.usrfiles.com/ugd/74a852_69ced4f20c564958b483660e2ac71479.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d4662859d2d47b78cebc99902649495.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_off00006aa4.bin
fe54062391256528f6f86e35791c297335fbf96b610ebc4995f2c118e4df0258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA4 5040 bytes
font_01_sfnt_off00007bc1.bin
0641489302a210eba929ef49eb1bcf8a8cdbfb774164675a31ac1d8630a08851		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC1 10412 bytes

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