Malicious PDF — malware analysis report

Static analysis result for SHA-256 617b98a3d3d484e8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 15:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0895e96543b6c0adbf19ff91b131bb3 SHA-1: 562696df9426db598af15d592c53fb9228a37d05 SHA-256: 617b98a3d3d484e87b0045b17a46b7cc42ecaa6b083e5fe55514b823da071310
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=star+wars+the+last+jedi+easter+eggs', suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to drive traffic to potentially harmful content.

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=star+wars+the+last+jedi+easter+eggs
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/8637/9163/files/desolutugutotero.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/ace_questionnaire_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0439/3123/8555/files/20280293875.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/broiler_feed_formula.pdf
    • https://static.usrfiles.com/ugd/c068f8_297b8602fac34d95bb25c3356d48cf9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_babffb207e8143ed8cd33ab84d595b2a.pdf
    • https://static.usrfiles.com/ugd/5b5da7_85cdecbfea844dd4a6af1e5835954ad6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b8d4db34fb94d73a78dfc389e551d89.pdf
    • https://cdn.shopify.com/s/files/1/0440/0214/8510/files/how_to_hack_whatsapp.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/peguxatetekepeviwavejejen.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_off00006a15.bin
708b8fa8dbd225909b9363b9787a091b74172ab7b0b30a925212577267c1761d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A15 5356 bytes
font_01_sfnt_off00007c53.bin
e536ba566fd78735c9fd28e488478ae080db37f99d649b36d38c974b0993529e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C53 10272 bytes