Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cee995282be6bc9…

MALICIOUS

PDF

31.8 KB Authoring application: Smallpdf Desktop
MD5: f802cf7c1bb6916075153ebe72a7b92d SHA-1: 71ed99225d56f29251e4dcc2380a7c41859aaaeb SHA-256: 9cee995282be6bc953b5ab107d9e2752b3a282e82824547ead22a424a88a3581
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 detected by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The ClamAV detection and ML classifier further support its malicious nature, likely for phishing or malware distribution. 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://angelidelsorriso.com/uploads/1/3/0/2/130289406/jumuvobebil.pdf
    • http://abnerdelnorte.com/uploads/1/3/0/4/130493476/4400950.pdf
    • http://nnoutt.com/uploads/1/3/0/7/130739830/feaafce94d9382.pdf
    • http://moralguard.org/uploads/1/3/0/6/130604511/3151872.pdf
    • http://electricianmartincounty.com/uploads/1/3/0/6/130620690/6588702.pdf
    • http://plutonemprise.com/uploads/1/3/0/2/130288448/6b0972843e344.pdf
    • http://naturalworld.club/uploads/1/3/0/5/130588343/0fa86.pdf
    • http://simplymetering.com/uploads/1/3/0/7/130739175/1898183.pdf
    • http://ketoboxie.com/uploads/1/3/0/8/130814430/sifolewagupilu_walazudan.pdf
    • http://beachclubproductions.net/uploads/1/3/0/5/130588360/linenogejusuxuj-vugelugefim.pdf
    • http://brandonmgraham.com/uploads/1/3/0/5/130550914/535067c27f4d.pdf
    • http://teamworkprofiles.com/uploads/1/3/0/5/130589252/4684105.pdf
    • http://purgatoirevalleyfoundation.org/uploads/1/3/0/5/130589014/3d7a42b4.pdf
    • http://happyweitravel.com/uploads/1/3/0/6/130621995/vinulurop.pdf
    • http://neuropolisblog.com/uploads/1/3/0/6/130604025/4434841.pdf
    • http://competetennismerchandise.co.uk/uploads/1/3/0/3/130313193/3189399.pdf
    • http://pmehard.com/uploads/1/3/0/6/130621119/rigofabok-joxasap-porege-penokelubiwif.pdf
    • http://jenntreado.com/uploads/1/3/0/5/130588232/130588232.html#discrete+fourier+transform+code+in+matlab
    • http://competetennismerchandise.co.uk/u

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001ffa.bin
1fc8a73212b3038100080c699725bb0743ac23f208659f4c742e2d77f2f3f23c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FFA 7612 bytes

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