Malicious PDF — malware analysis report

Static analysis result for SHA-256 35c9ce899e0107e1…

MALICIOUS

PDF

34.6 KB Created: 2020-05-16 08:39:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5128ab366663155a94319e29cdb8c4ff SHA-1: e9272a5973eb1aa4897abd6e748bdeb70e2fed77 SHA-256: 35c9ce899e0107e1e7064c40117a0f5a807e7b2cc34f7e8066705db7bc471817
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve to manipulate search engine results or redirect users to malicious websites. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used for creating PDFs from web content, which aligns with the link farm behavior.

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://poweredbytheblueoval.com/uploads/1/3/0/5/130588505/130588505.html#define+mandatory+minimum+sentences+and+sentencing+guidelines
    • http://harlesscenter.org/uploads/1/3/1/1/131163772/5b28f9d8cc14.pdf
    • http://frontlinetraining.net/uploads/1/3/1/3/131381109/fukalumufaz.pdf
    • http://skymoor.com/uploads/1/3/1/8/131856266/zuneloxomize.pdf
    • http://yellowpummelo.net/uploads/1/3/0/6/130621754/galonofulu.pdf
    • http://ctransformhealth.com/uploads/1/3/0/8/130874113/3211573.pdf
    • http://vitaperformance.net/uploads/1/3/0/5/130540397/judulejener.pdf
    • http://savon-alep-fleurs.com/uploads/1/3/0/5/130543133/3b172b33060f.pdf
    • http://dflcd2.net/uploads/1/3/0/4/130483219/f2d130.pdf
    • http://foalproof.org/uploads/1/3/1/3/131381540/e917c3aca60e.pdf
    • http://idbychloe.com/uploads/1/3/1/3/131383681/d60215f9b3cb908.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c8b.bin
a1a38d29ea37c0db49cd19ff53f6ee1132c542e251dee5f8bcfaaf099d3b6dda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8B 10136 bytes

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