Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d18d6b8571e2aba…

MALICIOUS

PDF

37.2 KB Authoring application: pdf-parser
MD5: c859bdf28533ec5d8db9fe55d1c22eb9 SHA-1: 75160807a2d800886d280a5855d53a7fa3e06a24 SHA-256: 4d18d6b8571e2aba2fed7af6cef56697e905e35cb81b7e680852c26b6d168876
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used for SEO poisoning or to redirect users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves luring the user to click on one of the numerous provided URLs, which are likely to host further malware or phishing content.

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://tipmoscow.ru/uploads/2020/01/27/7446126.pdf
    • http://gar.mukhitdinov.org/uploads/2020/01/27/biwoladikorod.pdf
    • https://wixuwiloxe.weebly.com/uploads/1/3/0/2/130289294/4b26234eb.pdf
    • http://fixas.conditionsnap.com/uploads/2020/01/28/3973724.pdf
    • http://mrcampbellscience.weebly.com/uploads/1/3/0/4/130489431/2236911.pdf
    • http://my-pristinedental.com/uploads/1/3/0/2/130271045/4292433.pdf
    • http://pattiepperson.com/uploads/1/3/0/4/130477945/dalorefaraxina.pdf
    • http://fito-spray-ellada.online/uploads/2020/01/28/9258525.pdf
    • http://mycorporateteambuilding.com/uploads/1/3/0/4/130435826/duwudafanipata-lovanikovube-xazebevi.pdf
    • http://qlcommunitychallenge.crowdrisetoolkit.com/uploads/1/3/0/4/130436285/relalevabesim-nonunojepaja-tudurito.pdf
    • http://letterdetectives.com/uploads/1/3/0/6/130605324/cfb75861e85.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/6/130621371/130621371.html#bostitch+n80+framing+nailer+manual

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132d.bin
c6e7f3d08424177ddf24e06c13de22f6f7f355bf279bab3b496269f36e66fb16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132D 9052 bytes

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