Malicious PDF — malware analysis report

Static analysis result for SHA-256 2440659445ab11e7…

MALICIOUS

PDF

35.6 KB Authoring application: OpenOffice Draw
MD5: a87f20594bfe21e78050788977d8491e SHA-1: 515be6b2ff657571cf03a6f415725566e4748334 SHA-256: 2440659445ab11e74f47145b76998b222b40f372fef31e060c149f952c621f1e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves luring users to click on these links, which are hosted on various domains.

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://gigi-oreficeria.com/uploads/1/3/0/7/130739316/pigesew.pdf
    • http://sparksrvpark.com/uploads/1/3/0/6/130639411/904972.pdf
    • http://mthermonministries.org/uploads/1/3/0/2/130287548/2e203.pdf
    • http://mygabrielagarcia.com/uploads/1/3/0/6/130621210/kuwinil.pdf
    • http://gsgfineart.com/uploads/1/3/0/2/130271131/8614730.pdf
    • http://vibrationalworld.eu/uploads/1/3/0/6/130620902/regal.pdf
    • http://www.clickshoppingonline.com/uploads/1/3/0/7/130739332/dimifodil.pdf
    • http://www.degora19.org/uploads/1/3/0/5/130545957/26ade96444d29cd.pdf
    • http://technologiedag.com/uploads/1/3/0/6/130604939/fepimivopude.pdf
    • http://www.theartofrichardshipley.com/uploads/1/3/0/7/130775705/gaduvoje-tatisodepo-sinopogenof.pdf
    • http://jameskennedygalleries.com/uploads/1/3/0/7/130739833/xazirefalanir.pdf
    • http://rawly.net/uploads/1/3/0/7/130775055/acbdba734745.pdf
    • http://onlineflouz.com/uploads/1/3/0/4/130483248/milowi-biviz.pdf
    • http://host3.carmichaelnl.com/uploads/1/3/0/8/130874222/130874222.html#5th+european+stroke+organization+conference

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003065.bin
8e30ed350cc924ec754f25276b223b694697692debd5e9276fcbf67ef70ef8a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3065 8636 bytes

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