Malicious PDF — malware analysis report

Static analysis result for SHA-256 202763f948a5d957…

MALICIOUS

PDF

46.3 KB Authoring application: LibreOffice
MD5: bca0ed1e9b38ab8358eba3cf8e8ed38b SHA-1: 5a1ae0f15f72c24f63243536a46859c196b947ee SHA-256: 202763f948a5d957d57c02efac32d71f87371df125a156a692144573cdae4de8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic redirection purpose. The embedded links likely serve as lures to download further malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cintri.org/uploads/1/3/0/4/130488382/nedutetinekowedi.pdf
    • http://ashtonharvey.com/uploads/1/3/0/6/130621043/zotuwix.pdf
    • http://soulrock.org/uploads/1/3/0/7/130775521/tejuzaxote.pdf
    • http://msert.net/uploads/1/3/0/5/130588687/lumiwakige.pdf
    • http://blushskyboutique.com/uploads/1/3/0/6/130620302/garewuzukotazobasat.pdf
    • http://ragfirearmsllc.com/uploads/1/3/0/6/130621153/tapus.pdf
    • http://3pfd.com/uploads/1/3/0/6/130639312/pobibebuzede.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/6/130604863/130604863.html#is+jordan+a+chevening+eligible+country

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011bb.bin
939ceb53fc304c0f7bf0667cbeb5f166ca07780419ac4a0a5b61085822f2a689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB 10080 bytes

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