Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3e095534d59bd9…

MALICIOUS

PDF

38.1 KB Created: 2020-06-06 10:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2a0b96135b53911074ac72a38c7e4c5 SHA-1: fafd7f80228e5ed166494612235f3ed15450cef2 SHA-256: dd3e095534d59bd9eb9af5ac64997b4573a6fe89027605e52a13fce95a742a81
92 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML_NYX_PDF_MALICIOUS heuristic strongly indicates malicious intent. The embedded URLs and the document body, though partially corrupted, suggest a lure mechanism to redirect users to potentially malicious content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://chewoncakes.com/uploads/1/3/0/6/130639553/130639553.html#stack+up+analysis+pdf
    • http://wpgcondocoach.com/uploads/1/3/0/8/130874233/geboxidutego.pdf
    • http://car1.info/uploads/1/3/1/1/131164446/vilimibeju-konidipe-kexefe.pdf
    • http://vanessaseals.com/uploads/1/3/1/4/131406698/585870.pdf
    • http://chewoncakes.com/uploads/1/3/0/6/130639553/terms.html
    • http://chewoncakes.com/uploads/1/3/0/6/130639553/dmca.html
    • http://chewoncakes.com/uploads/1/3/0/6/130639553/policy.html
    • https://budetojijop.files.wordpress.com/2020/06/16027957611.pdf
    • https://lopamogi.files.wordpress.com/2020/06/pelojidapupazarezebuje.pdf
    • https://murawewaw.files.wordpress.com/2020/06/1020064382.pdf
    • https://sabuninovaju.files.wordpress.com/2020/06/fokebesajutomid.pdf
    • https://zabipapubu336182313.files.wordpress.com/2020/06/94919558014.pdf
    • https://wedigari.files.wordpress.com/2020/06/11290166750.pdf
    • https://suzofosal.files.wordpress.com/2020/06/81862234260.pdf
    • https://wamunobafiki.files.wordpress.com/2020/06/50096847466.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_off0000679b.bin
2d1d86d9108185ca8a1618ec18a1df19ce4f076deb2bb1d091e633165e95c544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 10796 bytes

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