Malicious PDF — malware analysis report

Static analysis result for SHA-256 4833b2e88656839e…

MALICIOUS

PDF

36.2 KB Authoring application: Pdftk
MD5: 2c603ab4d109d7a061858f29b6048c5f SHA-1: 8648789af7948ae85ff86d383ab7a36d80e60cf6 SHA-256: 4833b2e88656839ed77a01426aa0286f33e8cf880ab31ef6085bf2c7bccb24b1
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or redirection scheme, commonly used to distribute malicious content or conduct phishing attacks. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, limiting the analysis of specific execution behaviors.

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://greenwolfverticalfarm.com/uploads/1/3/0/4/130476454/78c87c.pdf
    • http://esperanzafarm.org/uploads/1/3/0/5/130590507/37c30793ee5.pdf
    • http://wifeycosmetics.com/uploads/1/3/0/2/130270892/413703.pdf
    • http://musicalmonday.org/uploads/1/3/0/6/130605073/godiwadobulolo.pdf
    • http://plan2succeed.net/uploads/1/3/0/2/130272934/8978732.pdf
    • http://www.claudiamoorehealing.com/uploads/1/3/0/8/130874318/d41e4099c2f53.pdf
    • http://www.memorialdolls.com/uploads/1/3/0/4/130488498/ruzekuzozekodet.pdf
    • http://marijuanamarketexchange.com/uploads/1/3/0/7/130740001/7253385.pdf
    • http://sparksofthecreativefire.com/uploads/1/3/0/5/130590507/135560c.pdf
    • http://glencoveestates.com/uploads/1/3/0/6/130603809/5666eb4b403b7e.pdf
    • http://naturalhand.net/uploads/1/3/0/4/130489131/vozidirewimede-lemiliziso-teribunejiwe.pdf
    • http://adentamexico.com/uploads/1/3/0/2/130271023/timagote.pdf
    • http://0jeyt.slpny.com/uploads/1/3/0/9/130969916/130969916.html#example+of+alliteration+in+poem
    • http://sparksofthecreativefire.c

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003602.bin
085435fb6d10d6ac31017e5bc0fd9ed29c2e0412ff497d63b32991a3ee415dfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3602 7816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.