Malicious PDF — malware analysis report

Static analysis result for SHA-256 239158202dd33281…

MALICIOUS

PDF

42.2 KB Authoring application: QPDF
MD5: a7413fe3947742af163ee88c1b4d3328 SHA-1: ab9d3ae6da19070337838e12eee3b1535fec6630 SHA-256: 239158202dd332810ccadc8183b9d5d8f0c74d6ebea5a68a02162a6478d1dfb3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample, limiting the ability to detail specific execution chains.

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://squaretaper.info/uploads/1/3/0/4/130476262/jurukotovozeka.pdf
    • http://scylax.org/uploads/1/3/0/6/130604327/gegerifepirid.pdf
    • http://royalanimals.com/uploads/1/3/0/6/130604518/rifamodajobisa-fizukenigejoz-zijoboleg-setifevisave.pdf
    • http://unutma.com/uploads/1/3/0/8/130813784/nalepevapesuf_fapid_rasovofudar_duwagaj.pdf
    • http://iqmulate.com/uploads/1/3/0/4/130476575/6e38b6529c.pdf
    • http://heritagerailwayreview.com/uploads/1/3/0/6/130604602/8586f0.pdf
    • http://cocastlive.com/uploads/1/3/0/6/130640000/1283707.pdf
    • http://easyfreemoneyteam.com/uploads/1/3/0/4/130476481/d09edd01c85d26a.pdf
    • http://thunderbeams.com/uploads/1/3/0/5/130543816/5da414231431.pdf
    • http://www.gssports.org/uploads/1/3/0/9/130969019/7db58f2b11e.pdf
    • http://bukudata.com/uploads/1/3/0/7/130775195/8488249.pdf
    • http://asimpleido.net/uploads/1/3/0/4/130477420/7679585.pdf
    • http://mta-sts.mx.maggiesfarmtheater.com/uploads/1/3/0/2/130270775/cb20ea.pdf
    • http://mrsac.net/uploads/1/3/0/6/130604358/gunifupodiwab_fajasodiwa_zuvexagomavove_kekiranijedi.pdf
    • http://bcreativedesignandservices.com/uploads/1/3/0/6/130605325/tinuzijonali.pdf
    • http://myelizabethsanchez.com/uploads/1/3/0/6/130604177/monaxorugunipu-ramelukas-zeloxezekokevo.pdf
    • http://www.druidessconsulting.com/uploads/1/3/0/5/130541221/f5dbbf.pdf
    • http://www.possibilitiesunleashedllc.com/uploads/1/3/0/5/130551714/tisutebibeg-pudujovurefam.pdf
    • http://realty33nj.com/uploads/1/3/0/2/130287527/b5235f6ea8c4f85.pdf
    • http://www.careconnectcreate.com/uploads/1/3/0/5/130588864/2956548.pdf
    • http://www.sharpimagehomes.com/uploads/1/3/0/7/130775760/tukebewupamuda.pdf
    • http://treeservicemagnoliatx.com/uploads/1/3/0/6/130639853/923624.pdf
    • http://youandepression.com/uploads/1/3/0/6/130621190/4543102.pdf
    • http://noordzeebanket.com/uploads/1/3/0/4/130489082/jadusanidokibe-sedeko.pdf
    • http://www.fearlesssocial.net/uploads/1/3/0/7/130775969/130775969.html#sindrome+de+alcoholismo+fetal+wiki

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040e8.bin
a681c07b9caea671bd0d6bb0d4cd52c29bfd26b1bb5f3f13807593760d00b1ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40E8 8560 bytes

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