Malicious PDF — malware analysis report

Static analysis result for SHA-256 23295c6bf83ba498…

MALICIOUS

PDF

43.5 KB Authoring application: SWFTools
MD5: f7f78584d3a52319df3d92fedae0d7d0 SHA-1: 5c21ab24d63abfa6a2f1500c931070de154822d8 SHA-256: 23295c6bf83ba4982aa71cc50f1f8de5f526b110810efe32710c72bc8b86f9fb
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm designed to manipulate search engine results or to distribute malicious content. The ClamAV detection and ML classifier strongly support its malicious nature, likely for phishing or SEO spam.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://angiemoll.com/uploads/1/3/0/3/130323755/dugolovafel.pdf
    • http://naturalbirthingjoy.com/uploads/1/3/0/3/130323406/desuvejomiv-zugijalig-lenuvux.pdf
    • http://cc4wdclub.org.au/uploads/1/3/0/2/130287269/b577dde936912.pdf
    • http://motionzone.org/uploads/1/3/0/6/130604710/74bed50.pdf
    • http://preciousart.us/uploads/1/3/0/5/130543878/givepiku_verularisewufa.pdf
    • http://911snowremoval.com/uploads/1/3/0/6/130640225/1380151.pdf
    • http://unleashthesales.com/uploads/1/3/0/4/130483354/vaduti.pdf
    • http://microbladingcairns.com/uploads/1/3/0/6/130621589/19032e0e31077.pdf
    • http://shanghaigourmet.us/uploads/1/3/0/2/130289754/ditokexazakenuji.pdf
    • http://jumalamof.ecobike-shop.ru/uploads/2020/01/28/2846609.pdf
    • http://scupstateparalegals.org/uploads/1/3/0/5/130539718/43a275b4.pdf
    • http://bixoma.stroy-city.online/uploads/2020/01/29/silokosifibab.pdf
    • http://sajodalise.pornoizler.site/uploads/2020/01/28/2281396.pdf
    • http://kikcrafts.com/uploads/1/3/0/5/130590714/130590714.html#rogers+anyplace+tv+not+working+android

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001411.bin
b71b1474cdaa5ecf69aa17f18bbd0dbe9afc1ae88e8c5a47f7e5a78211149712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1411 9224 bytes

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