Malicious PDF — malware analysis report

Static analysis result for SHA-256 68dbab18afcddbee…

MALICIOUS

PDF

37.1 KB Created: 2020-08-29 03:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2e60dbdf2d5ebe579ecab39f2905efe SHA-1: 0cb694740a7f10aee38fe3149274a94abd653f17 SHA-256: 68dbab18afcddbee981231e1b9925840e8f40a95ef4ea0ecd333f014f958bb48
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector infrastructure. The primary redirector URL, https://ttraff.com/wix?keyword=dragon+ball+new+age, is flagged as malicious. The sample appears to be a link farm designed to lure users with seemingly innocuous content and then redirect them to malicious sites.

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.com/wix?keyword=dragon+ball+new+age
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_e7273b7c71ec4c0b95ebea59f1d08325.pdf
    • https://static.usrfiles.com/ugd/b8c837_1356335db90c4d868e3401d46a1d61ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4b38093ee154f2188d50831291210bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_96bc9a3e240048ac803e233e71ef1f68.pdf
    • https://static.usrfiles.com/ugd/b8c837_eadc98df350449ff82c4fff5010437db.pdf
    • https://static.usrfiles.com/ugd/b8c837_5da0f5f08b494a7cb7f3a9d0747fe9c2.pdf
    • https://cdn.shopify.com/s/files/1/0460/1872/3999/files/sokedatikuvuxedomite.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/mizigebikologogodovot.pdf
    • https://cdn.shopify.com/s/files/1/0440/6594/7800/files/3558310701.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/74010872751.pdf
    • https://cdn.shopify.com/s/files/1/0465/9393/3477/files/83346018506.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_off00005367.bin
2af62c73a8e3949e9e9c0f08f164ee0cdfe8eb468da222ff5c2d565f0b1f5866		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5367 4908 bytes
font_01_sfnt_off0000643f.bin
6aed346d50b3da85c22afd59cb20cc288f3b0ac1df3eef99129c95b91ed8b8af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643F 10504 bytes

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