Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25bd2562f355793…

MALICIOUS

PDF

47.0 KB Created: 2020-03-31 10:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a1841b7826eaf0d160b996771ce246f7 SHA-1: d04af981dd17c3284aba40df08dd551026d0f137 SHA-256: c25bd2562f355793a9600f703f6097eaf1c4a9f5520c029d85b80c79a5745c2e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by an ML classifier as malicious. It contains a large number of external links pointing to various PDF files hosted on different domains, indicative of a link farm or SEO spam campaign. The document body contains garbled text and a URL that appears to be part of the link farm. The primary attack pattern involves directing users to these external resources, which could host further malicious content or phishing pages.

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://dogregistrationpapers.com/uploads/1/3/0/5/130542769/130542769.html#remove+escape+characters+from+json+string+swift
    • http://riseandsigndelmarva.com/uploads/1/3/0/5/130589295/koxavozavexuka_gexaketaroz_jatomigafenu_mowukexe.pdf
    • http://charliesblackpudding.com/uploads/1/3/0/9/130969514/jusujunapu.pdf
    • http://icdemocracy.org/uploads/1/3/0/6/130605421/75825.pdf
    • http://tangtangspice.com/uploads/1/3/0/6/130603932/zufixiwun.pdf
    • http://michelbehrens.com/uploads/1/3/0/8/130874523/261d92e6.pdf
    • http://rockieglass.com/uploads/1/3/0/4/130475928/norufaniviv.pdf
    • http://callawaybluprint.com/uploads/1/3/1/3/131380901/jixoweta.pdf
    • http://iathletes.com/uploads/1/3/0/4/130476272/4e0c211.pdf
    • http://bourbonblast.com/uploads/1/3/0/6/130622101/2854c9.pdf
    • http://myjunkjunky.com/uploads/1/3/0/8/130873949/459707.pdf
    • http://commonlawdefender.com/uploads/1/3/1/0/131069879/boruzetimo-sogirerabiluve-kedezijimopeki-kelobilimuzewik.pdf
    • http://dougflagler.com/uploads/1/3/0/6/130639491/towam.pdf
    • http://ittohtrid.com/uploads/1/3/1/3/131398406/e460d7e6fb19f64.pdf
    • http://angussimmons.com/uploads/1/3/0/6/130621944/950720.pdf
    • http://technosprzet.pl/uploads/1/3/1/3/131382118/aa02018cc98.pdf
    • http://dreamelopementsny.com/uploads/1/3/1/3/131383726/jetabogi.pdf
    • http://countrymuttmaine.com/uploads/1/3/0/7/130775173/6477769.pdf
    • http://bamfordoriginals.com/uploads/1/3/0/5/130539659/gitegikeluvobibot.pdf
    • http://trishanton.com/uploads/1/3/0/6/130621436/vikev-terozobisiwefa-sesidafode-kujelomokido.pdf
    • http://scarletpoledancefitnesspuertorico.com/uploads/1/3/0/5/130551187/rezuna-vepipajapifa.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_off0000891f.bin
613253801e34cbf374c9d0802b91b8ce177a24d3ea60cb8479a4537f7d0e3519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x891F 9872 bytes

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