Malicious PDF — malware analysis report

Static analysis result for SHA-256 2920d4318b932538…

MALICIOUS

PDF

37.8 KB Authoring application: Karbon
MD5: 19f36b0be6f241350caa22de69b03351 SHA-1: 65b4c368c7bd46f631ab4a1ff713d285484051c3 SHA-256: 2920d4318b93253833c46d1c82ffe5f4d99c58c992a04d87274aed39586528e7
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM', pointing to various PDF files hosted on different domains. This suggests a campaign focused on distributing malicious content or manipulating search engine results. No scripts were extracted from this sample.

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://trafficlynx.com/uploads/1/3/0/5/130588960/c9da828ff.pdf
    • http://ekki.co/uploads/1/3/0/6/130620881/8b1b59c4b.pdf
    • http://powerofthepenpublishing.net/uploads/1/3/0/4/130436182/xujig.pdf
    • http://royalsingalongparties.com/uploads/1/3/0/7/130775361/2085667.pdf
    • http://theapostolicinititative.org/uploads/1/3/0/4/130483811/nolofamakedosezif.pdf
    • http://casadelvalleygalindo.com/uploads/1/3/0/5/130539979/rekeweronetilo.pdf
    • http://paperchasewholesale.com/uploads/1/3/0/2/130291556/89febb01.pdf
    • http://westcoastpawstransport.com/uploads/1/3/0/4/130483400/8026747.pdf
    • http://silkroadsourcing.co/uploads/1/3/0/7/130740391/pedexopej.pdf
    • http://elisanliving.com/uploads/1/3/0/6/130621871/ffaa66f0da9fe2.pdf
    • http://reicoinvestment.com/uploads/1/3/0/7/130739573/1468541.pdf
    • http://naturomedicbw.com/uploads/1/3/0/5/130551096/d131112025de0.pdf
    • http://lluviaoutsourced.com/uploads/1/3/0/4/130435763/e09f93fb8e.pdf
    • http://internationalvoiceforyouth.org/uploads/1/3/0/7/130776781/xujeburag-fowonako-vifiwabar-pupife.pdf
    • http://bfgcommercial.com/uploads/1/3/0/3/130323616/6115262.pdf
    • http://luckyrabbiteditions.com/uploads/1/3/0/5/130543588/ec815d9031.pdf
    • http://stylogentlemensweekend.com/uploads/1/3/0/6/130639767/626361.pdf
    • http://clearwash.fr/uploads/1/3/0/2/130289694/8307791.pdf
    • http://spectrum-capital.com/uploads/1/3/0/5/130589315/2628371.pdf
    • http://growincome.net/uploads/1/3/0/7/130739053/potivajamavodovaw.pdf
    • http://detoxspray.net/uploads/1/3/0/6/130621031/154bccbd02.pdf
    • http://cdn3.bassassassin.com/uploads/1/3/0/8/130873710/130873710.html#definition+of+qualitative+and+quantitative+market+research
    • http://detoxspray.net/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003390.bin
dc5f0fa55a200c8aebe0264bbb637c8bbdc30129a97f55a6e878e11789782cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3390 7744 bytes

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