Malicious PDF — malware analysis report

Static analysis result for SHA-256 44484e96668ffc58…

MALICIOUS

PDF

36.9 KB Authoring application: Pdftk
MD5: f8008feb9a7e3965e0f9dddc977fe8ba SHA-1: f25a4bb89a5590b3f8421eae230ac611efbfd910 SHA-256: 44484e96668ffc585e4fd80824d56bc8c84fca2820d5f8319d40fdf7239d3842
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of SEO poisoning or a phishing campaign designed to drive traffic to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection nature of this file. No scripts were extracted, limiting the analysis of direct payload execution.

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://lasabot.goodzinfo.net/uploads/2020/01/28/luwixovotogus-galibu.pdf
    • http://becodigital.com/uploads/1/3/0/4/130435787/jozetomuravorutixok.pdf
    • http://jujuvomo.design-interior.su/uploads/2020/01/28/2813032.pdf
    • http://harrishomehelpers.com/uploads/1/3/0/5/130543305/jilijesebifide.pdf
    • http://mobilityeco.com/uploads/1/3/0/5/130550743/xiduwexikuzoxal.pdf
    • https://kexirodexiludi.weebly.com/uploads/1/3/0/4/130489926/xerudot.pdf
    • http://bamipi.aavit.pro/uploads/2020/01/28/vulopafiguxuri.pdf
    • http://551myersavenue.com/uploads/1/3/0/5/130539034/d7f0c7bb81ae5.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/5/130551684/130551684.html#macbeth+comprehension+questions+and

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a6.bin
901cb9c25e9f2f95e15f7a99c14e91a82207afe246094d9e2f27bd7977f86242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A6 7800 bytes
font_01_sfnt_off0000462c.bin
9dbefd29ad56edc3ec27c88540d7d41398a664ae3f1544cdca53ccca226c91b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x462C 10764 bytes

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