Malicious PDF — malware analysis report

Static analysis result for SHA-256 b26b017d1a2a5232…

MALICIOUS

PDF

63.7 KB Authoring application: Adobe PDF Library 9.0
MD5: 1ea66fb23f69c3cd3ebfa6e07705508e SHA-1: f79615b455fdc4ef359416e438eac42455c36551 SHA-256: b26b017d1a2a5232edff332ccf3d6e0e5d7992b7aca51272bb62a8fdf39c9190
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it with high confidence. The document body is heavily obfuscated and contains a mix of seemingly random characters and URLs, further supporting the malicious intent.

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://hostmaster.bricabracmusic.co.uk/uploads/1/3/0/5/130589416/kizezo.pdf
    • http://www.championsforcare.com/uploads/1/3/0/5/130588511/8b2f46.pdf
    • http://roskita.com/uploads/1/3/0/6/130620869/zukarukabafifu.pdf
    • http://thepowerofmemory.com/uploads/1/3/0/7/130776804/bexebis.pdf
    • http://www.eggstrainer.com/uploads/1/3/0/5/130589140/getarad-jokononawumulu-zotubenegugunu-vukonunezibedom.pdf
    • http://comprarseguidoresdeinstagram.com/uploads/1/3/0/6/130604595/jofenoxigiv.pdf
    • http://hivemindbrewing.com/uploads/1/3/0/6/130639317/21ab1246c0d.pdf
    • http://mapist.net/uploads/1/3/0/6/130604207/varubokik-fazutisovipabej-zavisixeralit-jegasederapi.pdf
    • http://www.birchallhawke.co.uk/uploads/1/3/0/6/130620843/firigagofenilitil.pdf
    • http://my-reconciliation.com/uploads/1/3/0/4/130435715/1769846.pdf
    • http://photoandvideoclasses.com/uploads/1/3/0/6/130639143/4421449.pdf
    • http://asieladesignsinc.com/uploads/1/3/0/6/130621113/4673592.pdf
    • http://restorationexpeditions.com/uploads/1/3/0/8/130815115/nesolizof.pdf
    • http://www.smart-feet.com/uploads/1/3/0/3/130313113/sibojelukesef_xigibimo_vejen_divupiziwusufen.pdf
    • http://trinity180.org/uploads/1/3/0/6/130604560/5ae830e001.pdf
    • http://mta-sts.littleindiarestaurant.ca/uploads/1/3/0/6/130604315/rewix-nerami-lovagubig.pdf
    • http://www.kimberleyvinnell.com/uploads/1/3/0/8/130815482/nitopevanit.pdf
    • http://clientretentionsuccess.com/uploads/1/3/0/7/130738847/053d32.pdf
    • http://queentcrownedme.com/uploads/1/3/0/8/130874046/a7922e8fc.pdf
    • http://itsamomslifeblog.com/uploads/1/3/0/2/130287919/130287919.html#replication+of+single+and+double+stranded+dna+and+rna+viruses

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016fd.bin
69eb39d6ac4bb8877fa42a919c8b167afbd083d4198edb693b319f544091bb77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FD 9264 bytes
font_01_sfnt_off0000bd8b.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8B 3156 bytes

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