Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d87bdfe6d4f2a51…

MALICIOUS

PDF

57.4 KB Authoring application: pdf-parser
MD5: 24a28788022bb2a809f870c1029fcc0a SHA-1: 8d6b7ab01700c491756976f2f6ce9137a85028b8 SHA-256: 2d87bdfe6d4f2a51957dbabe936bffbf34c4ccc616d6f0271944e76ef30a84d9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. No scripts were extracted, but the embedded URL structure suggests a phishing or redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://teresejuntz.com/uploads/1/3/0/7/130740242/zozupewewonotibojati.pdf
    • http://noahcwhite.com/uploads/1/3/0/5/130589163/dopejilexifalavi.pdf
    • http://kyungsan.us/uploads/1/3/0/4/130436313/moreramupekepi-xater-dalitagudidas-parozemofuteg.pdf
    • http://techsafari.org/uploads/1/3/0/6/130604256/27d89e.pdf
    • http://blogg.allegro-as.no/uploads/1/3/0/6/130603702/6101641.pdf
    • http://mysticmancreations.com/uploads/1/3/0/7/130739336/151162.pdf
    • http://texomaitsolutions.com/uploads/1/3/0/7/130776219/9962179.pdf
    • http://911-podarok.site/uploads/1/3/0/7/130739052/nipukibipusutetaj.pdf
    • http://activeachievers.com/uploads/1/3/0/7/130738780/nejawisozojebofalu.pdf
    • http://apacint.com.au/uploads/1/3/0/7/130775013/mapadipoguxozunowegi.pdf
    • http://kaleidoscopeceramics.com/uploads/1/3/0/7/130776425/wazowebavopuwap_balezagam_dopixixow_goramadikikogef.pdf
    • http://www.jewelrybyjimpluhar.com/uploads/1/3/0/2/130270924/pareribesas.pdf
    • http://theoccasionalblog.com/uploads/1/3/0/2/130288448/8953758.pdf
    • http://triathlonrankings.com/uploads/1/3/0/2/130289682/nogalufujajati.pdf
    • http://searchdmd.com/uploads/1/3/0/7/130775744/5a90ff.pdf
    • http://smtp.ourchildrenshomestead.org/uploads/1/3/0/6/130605135/1313295.pdf
    • http://thequestfilms.com/uploads/1/3/0/6/130604154/zisixevofapeb.pdf
    • http://goldlendcapital.com/uploads/1/3/0/2/130289760/92a3c23b452.pdf
    • http://duane-thomas.com/uploads/1/3/0/5/130590164/gunufosigemijere.pdf
    • http://www.jcitaipei.org/uploads/1/3/0/2/130291033/130291033.html#chand+grahan+ki+namaz+ka+tareeqa

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00004792.bin
fcff4918ebe778a94ba68077015a5bcc8490a5cc1bc9de29a18996b5e43d63f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4792 26796 bytes
font_01_sfnt_off0000743b.bin
a8df010b1399a96c1ee22a2835f49fe30c228538b3508d2bedc8b55142d68c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x743B 3576 bytes
font_02_sfnt_off000082f7.bin
cc6b27658ac6b6a3ab820f97fec2fbf3f99919dfa300ecb3435392d83daaaccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F7 7996 bytes

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