Malicious PDF — malware analysis report

Static analysis result for SHA-256 2994385b5df1d6a1…

MALICIOUS

PDF

114.1 KB Created: 2020-04-07 12:40:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 64f376c6dc7dc25798179605034894ba SHA-1: be478bc55efdb90fadd4f9c75adfdeebaaf6c52c SHA-256: 2994385b5df1d6a1a98f240fc1d6ca595af565dab61ebf4851c3f5b7204b538e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to seemingly unrelated PDF files with numeric or book-related slugs. This suggests a link farm or SEO spam tactic. The document body, though heavily obfuscated, contains references to 'Robert fagles iliad pdf' and 'wkhtmltopdf', indicating a potential lure to a specific document. The primary heuristic firing indicates a mass external PDF link farm, with several unknown reputation URLs extracted.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://misssoutheastpageantry.us/uploads/1/3/0/4/130489448/130489448.html#robert+fagles+iliad+pdf
    • http://stagedoortheatreok.com/uploads/1/3/0/3/130323972/niwadaxilomizos-bajaxifamigo-sarawelanoj-wataputuzij.pdf
    • http://wyliecat30-silkye.com/uploads/1/3/0/7/130740017/feb72d8.pdf
    • http://sourcingas.com/uploads/1/3/0/2/130271126/039b9adc91b9.pdf
    • http://nyanyakrasnoyarsk.ru/uploads/1/3/1/3/131383738/0595b5c165d0f.pdf
    • http://thewestwoodgroup.net/uploads/1/3/0/5/130546519/nujap_sagodixa_birukitinaj_vuduvurorej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017351.bin
403c0b9c90f728612047332be36ce96ae59fc39d398cf867eacf407629dfca17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17351 8616 bytes
font_01_sfnt_off0001946c.bin
2de20b913ad27cfa4dca46f652f5783f46c7c8a071da907ab440e1ba32d4cc0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1946C 4316 bytes
font_02_sfnt_off0001a32b.bin
b78c2b006332c4586f6635e5878e3487cb85da494bdbd331d78e3bea0d95c408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A32B 16460 bytes

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