Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1b423d794cff3d…

MALICIOUS

PDF

44.6 KB Authoring application: Solid Converter PDF
MD5: 372b2821a3f7aecffebce5fc0bacfae0 SHA-1: fc455ff11f55b54fad3b1a50a6221c47f49cc45d SHA-256: ec1b423d794cff3dd7224e8cc3456c1427cd1a027e85c3a4fdadfb4c872fb5d6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to external PDF files hosted on various domains. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support a malicious intent. The primary goal appears to be directing users to a network of malicious sites, likely for phishing or malware distribution.

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://dedi.gdxsdxrexgtesgxdsese.xyz/uploads/2020/01/29/5624118.pdf
    • http://songofthelarkmusicforthesoul.com/uploads/1/3/0/3/130313049/zodutubo-biwenafonojax.pdf
    • http://nidustheatrearts.co.uk/uploads/1/3/0/2/130271001/gewigow.pdf
    • http://alexhowarthpt.com/uploads/1/3/0/5/130539759/boviwosebopuzibumu.pdf
    • http://mata.sargarmoshka.ru/uploads/2020/01/27/6e25719.pdf
    • http://ramitaleencafe.com/uploads/1/3/0/3/130313766/bedujisutabine-soputije.pdf
    • http://rendimentoextra.pt/uploads/1/3/0/2/130289338/b9bf433f7c1.pdf
    • http://mokeloja.lanticadimansotti.com/uploads/2020/01/29/69d109.pdf
    • http://bowe.geltser.info/uploads/2020/01/28/bebufebilanokeze.pdf
    • http://seanrancier.com/uploads/1/3/0/2/130272586/juzepe_jivupawosuze_fezapixufus.pdf
    • http://dewiw.rkmw.ru/uploads/2020/01/27/22cdf5d9052c98.pdf
    • https://vegilesizama.weebly.com/uploads/1/3/0/3/130323675/8675760.pdf
    • http://perfeccionatupiel.com/uploads/1/3/0/5/130588754/ca84050.pdf
    • http://airguardian3.com/uploads/1/3/0/6/130603743/9dfec84d986c746.pdf
    • http://oriolfinancial.com/uploads/1/3/0/2/130272101/62d9af534bf610f.pdf
    • http://nataliadgrafica.com/uploads/1/3/0/6/130640174/7028265.pdf
    • http://totaleventexhibition.com/uploads/1/3/0/2/130271035/vafexorij.pdf
    • http://cavecanemcolectioni.com/uploads/1/3/0/2/130288798/130288798.html#solution+chemistry+notes+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001530.bin
2c5d3304e07640923b5752f104e1a896ccf4f4b4f17d331037ba5d5943f837a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1530 8308 bytes
font_01_sfnt_off000067b1.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B1 16068 bytes

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