Malicious PDF — malware analysis report

Static analysis result for SHA-256 323f2216efd13f51…

MALICIOUS

PDF

38.3 KB Authoring application: PDFedit
MD5: 3716e632202a28bcd016203c5571b107 SHA-1: b742a3698ce8bf4fc9a15c621d6ff71637b86666 SHA-256: 323f2216efd13f512d581e3679fcba3623df8a69be4d36178600188cfdcf34d2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malware. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The ML classifier also strongly flagged this as malicious. No scripts were extracted, and the document body was heavily obfuscated and unreadable.

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://theanonymousllama.com/uploads/1/3/0/3/130379087/099a4.pdf
    • http://www.rafterpack.com/uploads/1/3/0/6/130640000/rovoviluve_faniwupilevoxi_rosiz_giwogikewa.pdf
    • http://northalabamavinylspecialists.com/uploads/1/3/0/2/130291471/2717a7ff36d9c3b.pdf
    • http://scenicviewsigns.net/uploads/1/3/0/4/130483848/ginijebiwonisizix.pdf
    • http://12acresfarm.ca/uploads/1/3/0/5/130540699/76be2.pdf
    • http://susiesbistroandbakery.com/uploads/1/3/0/3/130379222/679fb370.pdf
    • http://roadstripe.org/uploads/1/3/0/7/130775567/b6e5f7f.pdf
    • http://ashleyklemmbirthservices.com/uploads/1/3/0/6/130604458/7287777.pdf
    • http://newmedialab.centre4innovation.org/uploads/1/3/0/6/130621613/pesowonix-lilupi-jagefonixeboge.pdf
    • http://mikescoastlawnmowing.com/uploads/1/3/0/8/130874469/b25057a79c.pdf
    • http://eriescontractor.com/uploads/1/3/0/4/130489275/disopobako.pdf
    • http://physicschannel.org/uploads/1/3/0/5/130588498/tulapo.pdf
    • http://dunedinrockchoir.org/uploads/1/3/0/5/130539734/5d4af1df429ab.pdf
    • http://buildingonbookspodcast.com/uploads/1/3/0/6/130621909/6121378.pdf
    • http://isabellabroggini.com/uploads/1/3/0/6/130621689/fdefd6bc1d3.pdf
    • http://occasionsbygigi.com.au/uploads/1/3/0/5/130540554/204717.pdf
    • http://www.thelittleflowercompany.com/uploads/1/3/0/6/130639027/wojado.pdf
    • http://goldenwordonline.com/uploads/1/3/0/6/130639462/9120911.pdf
    • http://nicksandmay.com/uploads/1/3/0/8/130874102/d14280bbc1baa41.pdf
    • http://74-123-76-25.mgwnet.com/uploads/1/3/0/6/130639668/130639668.html#analytical+skills+test+with+answers+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003746.bin
ad00fcdb4dde502cbaad4a971a56c9abb41e0d502cda2c59fc86c11937858a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3746 7816 bytes

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