Malicious PDF — malware analysis report

Static analysis result for SHA-256 865b667b43102ecc…

MALICIOUS

PDF

40.4 KB Authoring application: Nitro PDF
MD5: b85c2d5106fb3bc40e7afe786db56c3d SHA-1: 21c966e362eaf1ebd075b91098734f7176ba72bf SHA-256: 865b667b43102eccccdbbf33298abfc7e93a9c285aa79fd0b1c5b8dc9888a526
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 documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly support this assessment. No scripts were extracted from this sample.

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://miami.momotombochocolatefactory.com/uploads/1/3/0/3/130323208/girinib.pdf
    • http://guidedfishingyukon.com/uploads/1/3/0/6/130604530/lipaxi-tupitalomaze.pdf
    • http://sprzataniewspolnot-warszawa.pl/uploads/1/3/0/6/130639934/voxived.pdf
    • http://montessorilawrence.org/uploads/1/3/0/5/130588244/3981040.pdf
    • http://depthstiny.com/uploads/1/3/0/4/130476033/2416321.pdf
    • http://mydmdesign.com/uploads/1/3/0/4/130483265/vobedajeve.pdf
    • http://vipiw.vas-zakon.ru/uploads/2020/01/28/adad1713e3c09d.pdf
    • http://dtrservice.it/uploads/2020/01/27/f7cf2125ab3c802.pdf
    • http://comoxmobilemassage.ca/uploads/1/3/0/5/130588698/dotizixofo-vaxazezuvo-wuzakavamijemuw-nuxaxaditobo.pdf
    • http://ilianaroal.com/uploads/1/3/0/5/130540554/mitinemobodigezufege.pdf
    • http://robemi.datingnearme.in/uploads/2020/01/28/fadagabuneko.pdf
    • http://ophsclassof1999.com/uploads/1/3/0/5/130543483/jagix-lapivizilutabem.pdf
    • https://saxutomavel.weebly.com/uploads/1/3/0/3/130379408/borafepu.pdf
    • http://rivendellberry.com/uploads/1/3/0/6/130640033/3a134b67.pdf
    • https://kubasosigo.weebly.com/uploads/1/3/0/2/130287919/diwogoguwafibi-nedarazuv-xewifuxike-gitamofigiwin.pdf
    • http://durewawir.remstroi-metal.ru/uploads/2020/01/28/folibazoxive.pdf
    • http://michaudwellness.com/uploads/1/3/0/3/130323220/130323220.html#business+communication+skills+questions+and+answers+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000154a.bin
cfb7c9fd00a2c1b44e6f472e20c7f5580742e7c70bf25fc02d9bb02759f7a4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x154A 8068 bytes

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