Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7cb1ee6c4903742…

MALICIOUS

PDF

44.2 KB Authoring application: PDF Studio
MD5: b8c8e1027c5825c0dc84fd51dfdcdc17 SHA-1: f61ec1c49247f97444d4af46a73172c1ce0c421d SHA-256: f7cb1ee6c490374264fb7ac93de28ea46a65edf9f42196685ad0720fb11fd5bf
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier further support its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall. 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://nycrenaissanceman.com/uploads/1/3/0/4/130436014/sikebidiwipel.pdf
    • http://daybreakerstest.com/uploads/1/3/0/5/130539179/4176496.pdf
    • http://www.vtwinflyer.com/uploads/1/3/0/6/130621405/74368c80c4b71.pdf
    • http://norbertfodor.com/uploads/1/3/0/6/130604869/gazotowu.pdf
    • http://389summerave.com/uploads/1/3/0/7/130776315/logusazuwepul.pdf
    • http://larkspurbike.com/uploads/1/3/0/7/130775295/fapisesixevo.pdf
    • http://www.dbinspectionsla.com/uploads/1/3/0/5/130551282/bowapaxufe.pdf
    • http://marleysbarcatering.com/uploads/1/3/0/7/130739895/18da8b7e.pdf
    • http://optykkowalczyk.net/uploads/1/3/0/6/130639028/9151839.pdf
    • http://beachapothecary.shop/uploads/1/3/0/8/130814351/2460029.pdf
    • http://www.tradhusbyggarna.se/uploads/1/3/0/2/130288600/d34d78f47df9.pdf
    • http://cindyscrittercamp.com/uploads/1/3/0/2/130291649/150efc301379a6a.pdf
    • http://www.phunkyfreshphest.com/uploads/1/3/0/7/130740612/xuzexugu-famewatur-bitoxoxi.pdf
    • http://miloandmonroeboutique.com/uploads/1/3/0/7/130776572/9823969.pdf
    • http://algocyte.co.uk/uploads/1/3/0/5/130589048/c9a4eeea0465.pdf
    • http://reggaeclassictouch.com/uploads/1/3/0/4/130478648/vixavu.pdf
    • http://www.ziawaste.com/uploads/1/3/0/2/130287727/acfc0aec99f8.pdf
    • http://www.tiedyeharvest.com/uploads/1/3/0/9/130969795/9fa57fc921c.pdf
    • http://mx.bergcui.com/uploads/1/3/0/8/130814513/kexefu.pdf
    • http://flintcaucus.org/uploads/1/3/0/2/130272355/rolobo.pdf
    • http://regenerationu.com/uploads/1/3/0/8/130814347/6c5ddb.pdf
    • http://onnellisuuskoulu.net/uploads/1/3/0/7/130740318/a4787.pdf
    • http://bishophomeservices.com/uploads/1/3/0/2/130273804/fuwok.pdf
    • http://bestshoptvusa.net/uploads/1/3/0/9/130969817/130969817.html#atividades+sobre+tabela+periodica+para+9o+ano
    • http://larkspurb

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047c5.bin
ce8dbf495a8f2fbb1d76c4f36fa1ab8900240714c0a297dbbbabc13b0d51d383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47C5 10596 bytes

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