Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea1fcb319b97b75…

MALICIOUS

PDF

39.5 KB Created: 2020-04-05 06:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c296310585d8f100c50483e4a444cf03 SHA-1: ad71cf68008544f59e509f871bd746d75cb266e2 SHA-256: bea1fcb319b97b75c72408f71df2ab08e1e9fa124965e7779e38a44c84c5b129
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, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary external URI found is http://bernardobellostudio.com/uploads/1/3/1/4/131453506/131453506.html#sistema+solar+de+que+color+son+los+planetas. This suggests a link farm or redirection mechanism designed to lead users to potentially malicious content or phishing pages. The ML classifier also strongly indicated maliciousness.

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://bernardobellostudio.com/uploads/1/3/1/4/131453506/131453506.html#sistema+solar+de+que+color+son+los+planetas
    • http://tomsknobs.com/uploads/1/3/0/4/130476555/2858940.pdf
    • http://dalybrand.com/uploads/1/3/0/6/130605080/3066183.pdf
    • http://scotpilie.com/uploads/1/3/0/6/130620670/zuronot.pdf
    • http://rydeinc.com/uploads/1/3/0/6/130639714/puxisefixu-mebunup-ruvefap.pdf
    • http://businessplus-site-editor.com/uploads/1/3/0/4/130483592/3756581.pdf
    • http://hydrocleanexperts.com/uploads/1/3/0/5/130588833/6346961.pdf
    • http://beautifulgateinternational.org/uploads/1/3/0/4/130435717/rapelof-parukazazomax.pdf
    • http://hygenierocks.org/uploads/1/3/0/5/130551625/f7bc48.pdf
    • http://camassiss.com/uploads/1/3/0/6/130604568/7712101.pdf
    • http://thefrenchbohemienne.com/uploads/1/3/0/2/130289460/bemufez.pdf
    • http://sparkyourplanb.com/uploads/1/3/0/7/130739810/pigugolame.pdf
    • http://midwestfutures.com/uploads/1/3/0/9/130969154/5823936.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_off0000715a.bin
61e903b084ebd6211e709ab383ea76b4012999de876b422eb259be44ac2f2443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715A 8736 bytes

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