Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff27d55aee340b8a…

MALICIOUS

PDF

38.3 KB Created: 2020-06-05 22:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd1bf1219c159ab523f57ce76f938a74 SHA-1: c56a42864eb0d645d5cc43ddb92d8da9162d605a SHA-256: ff27d55aee340b8a2724e428585a1ce02739c57923c4793cc385d08408d41ff1
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains associated with link farms and SEO manipulation. The document body, though partially corrupted, contains text related to 'transfer items in ark' and mentions the wkhtmltopdf tool, suggesting a lure to external content. The PDF_SEO_LINK_FARM heuristic firing strongly indicates a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dsmfunko.com/uploads/1/3/1/3/131379939/131379939.html#how+to+transfer+items+in+ark
    • http://victorynchrist.org/uploads/1/3/1/8/131856353/210555c30.pdf
    • http://lelitmural.com/uploads/1/3/0/2/130288380/jovesonabodemaw.pdf
    • http://adsl-63-204-18-34.benefitplans.org/uploads/1/3/0/5/130539676/vusepimagimuvore.pdf
    • http://worship.foxvalleychurch.org/uploads/1/3/0/7/130738948/nizejefo-kizowa-tuzidomirufu-kujit.pdf
    • http://dsmfunko.com/uploads/1/3/1/3/131379939/terms.html
    • http://dsmfunko.com/uploads/1/3/1/3/131379939/dmca.html
    • http://dsmfunko.com/uploads/1/3/1/3/131379939/policy.html
    • https://genotome.files.wordpress.com/2020/06/pogeritiluf.pdf
    • https://rilaxenatime.files.wordpress.com/2020/06/zevumunox.pdf
    • https://vizupozum.files.wordpress.com/2020/06/93425351548.pdf
    • https://mavuwepezigi.files.wordpress.com/2020/06/gifizezutewibazuwoxoladid.pdf
    • https://lupotetifub.files.wordpress.com/2020/06/loxokonatibatapex.pdf
    • https://podirali.files.wordpress.com/2020/06/2625944662.pdf
    • https://nabelijun.files.wordpress.com/2020/06/zofeviwiwaxuvifetu.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_off00006cb1.bin
98624aa888f2afbc549e50c4c4ed71accf480204d5dd46659415c51abaedb315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB1 9704 bytes

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