Malicious PDF — malware analysis report

Static analysis result for SHA-256 74870cd35a973869…

MALICIOUS

PDF

32.4 KB Created: 2020-08-29 15:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9787d5acea000b0324b9ab899267c0c5 SHA-1: 41ce21376a3f8ad5f33d3025a7fa90358ec2a5f7 SHA-256: 74870cd35a973869d6986ecc6fe87c12b5bc713143b6dca2016089d64055c7b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.ru/wix?keyword=tide+smart+dry+hanger. The document's structure and embedded links suggest an attempt to manipulate search engine results or lure users through deceptive content. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

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=tide+smart+dry+hanger
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/xosapikoxoragarin.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/robenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6792/4899/files/92310114041.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad7a99210a994cf8b5527a8b86da81c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_6bdce39293c54a7a9f3752d5b4024c03.pdf
    • https://static.usrfiles.com/ugd/b8c837_94a734d428014021b55e1f01f855b377.pdf
    • https://static.usrfiles.com/ugd/0df15e_08474a21873442aea2ba8fa5cf838720.pdf
    • https://static.usrfiles.com/ugd/eb4c03_77be6a1e2ce141a4bdac8c6b364eaefb.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c9d490aab846f5b80f94d44adeccb7.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ee0.bin
f1919a9bfcbe88a5a648c910b3a6f0052d70758e1f630ac0d5dcf1bfcbc09634		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3EE0 5260 bytes
font_01_sfnt_off000050a0.bin
1e1315748258155199f8aceb8a75a04c7e1b40e2135d5e6b1213e3974406b146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50A0 10320 bytes

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