Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f5a7179dd383c9…

MALICIOUS

PDF

40.0 KB Authoring application: Nitro PDF
MD5: e241c6fa1c54f3fd768843be54f7f4e8 SHA-1: b9cd632faa3e2cd35f8d27301ce7b81426be7e8c SHA-256: 59f5a7179dd383c989cfa4dfac065f9827a90ea09ea168d83fad3d193e07a4e0
152 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 further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support the malicious nature of this document. The document body was heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

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://brileroy.com/uploads/1/3/0/9/130969931/lunoxelujitun_poxekarim_govogomor_jiduge.pdf
    • http://detox2020retreat.com/uploads/1/3/0/2/130289648/wavazumo.pdf
    • http://mr-jordan.net/uploads/1/3/0/5/130589083/rokogiperiwa-piturufibe-rezolabegozosa.pdf
    • http://www.patriotnotaryservices.com/uploads/1/3/0/8/130874119/5070261.pdf
    • http://showersheds.com/uploads/1/3/0/5/130550994/3373609.pdf
    • http://noon2moon.com/uploads/1/3/0/4/130483193/pidaxamumu.pdf
    • http://mecol.net/uploads/1/3/0/3/130379351/zamunetugidezixozi.pdf
    • http://www.simplifycoaching.net/uploads/1/3/0/4/130483146/jolenoxexowagokejib.pdf
    • http://cpanel.teesarewild.com/uploads/1/3/0/3/130323185/risajidilen.pdf
    • http://www.melaniekool.com/uploads/1/3/0/4/130435701/nuguvajazir.pdf
    • http://mysifortenbery.com/uploads/1/3/0/6/130621392/0ee06.pdf
    • http://dulcebesitos.com/uploads/1/3/0/4/130435881/munizan.pdf
    • http://frankieharrer.com/uploads/1/3/0/6/130604582/vizoroxapoxixogoja.pdf
    • http://moleculeminions.com/uploads/1/3/0/7/130776526/6bd468bfd.pdf
    • http://lavenderhatbox.com/uploads/1/3/0/4/130435702/repedewaludux-zugemetemodub-zupovagoz-firalok.pdf
    • http://www.kiwiwinetours.co.nz/uploads/1/3/0/3/130323794/gewobemavowujo-wapobu-vefim.pdf
    • http://kerilyngrant.com/uploads/1/3/0/3/130323764/rebejaxizexupe.pdf
    • http://julianafranciskelly.com/uploads/1/3/0/3/130379067/makovofe.pdf
    • http://dakelectricalcontractors.com/uploads/1/3/0/9/130969420/pokupidepolurusezob.pdf
    • http://4angelstshirts.com/uploads/1/3/0/5/130588185/130588185.html#biserica+adormirea+maicii+domnului+rahova
    • http://brileroy.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003acf.bin
732e0e3436a5e22792fe2992cf34559c36de93c0a6e31b52583f334edaa0202b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3ACF 9900 bytes

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