Malicious PDF — malware analysis report

Static analysis result for SHA-256 803fdf08473f2adc…

MALICIOUS

PDF

42.3 KB Authoring application: Karbon First seen: 2020-09-24
MD5: 8ab19a5a83097bd2b556c07ae2791502 SHA-1: 4cc67fd675376453dbec2e7003b050aa22b43690 SHA-256: 803fdf08473f2adc4dee887de4c3f42d16ad68bb54563f61f81f90e6564f4c6b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing or traffic redirection. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to malicious resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://asiaoutdoors.com.vn/uploads/1/3/0/2/130289291/mupezatopotefekizoj.pdf In PDF document text
    • http://nyanyaekaterinburg.ru/uploads/1/3/0/6/130639745/4d5a522572ea.pdfIn PDF document text
    • http://stagcroatia.net/uploads/1/3/0/8/130814192/a295c.pdfIn PDF document text
    • http://pciprimer.com/uploads/1/3/0/7/130775379/buvubawaro-xedukusaka.pdfIn PDF document text
    • http://mindfulnesswelcome.com/uploads/1/3/0/6/130639883/72a31452fb.pdfIn PDF document text
    • http://vladimirgarzacirco.com/uploads/1/3/0/4/130476816/zateniruwa.pdfIn PDF document text
    • http://animspree.com/uploads/1/3/0/2/130291699/gewuwe-xuwonelape-darozemijugero-numaz.pdfIn PDF document text
    • http://www.carouselmusictheatre.org/uploads/1/3/0/2/130272232/1eda89bc3.pdfIn PDF document text
    • http://seodublin.org/uploads/1/3/0/4/130488282/5daa718f840.pdfIn PDF document text
    • http://harvestleaders.org/uploads/1/3/0/6/130621509/vavide.pdfIn PDF document text
    • http://allabouthimministriessc.com/uploads/1/3/0/6/130621238/f3ca8d84.pdfIn PDF document text
    • http://www.slofindinghope.com/uploads/1/3/0/5/130590482/vexibi_buvamirikal.pdfIn PDF document text
    • http://basaltto.com/uploads/1/3/0/5/130551378/344596c20131e49.pdfIn PDF document text
    • http://www.theluckyfewbooksandfundraising.com/uploads/1/3/0/5/130588202/4c192574e.pdfIn PDF document text
    • http://angryselfloathingbabies.net/uploads/1/3/0/6/130639709/tusefe.pdfIn PDF document text
    • http://www.dogwalkersilford.com/uploads/1/3/0/8/130874580/717ec865b.pdfIn PDF document text
    • http://ramsen.com/uploads/1/3/0/7/130776788/kopejerifivuvo.pdfIn PDF document text
    • http://woodcanners.com/uploads/1/3/0/7/130739779/8117787.pdfIn PDF document text
    • http://victoriajsmith.com/uploads/1/3/0/6/130640114/4241224.pdfIn PDF document text
    • http://patrickjbryan.com/uploads/1/3/0/2/130288511/80c46e09b2d8.pdfIn PDF document text
    • http://benkregel.com/uploads/1/3/0/3/130323424/130323424.html#wii+theme+song+piano+sheet+musicIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F0 9076 bytes
SHA-256: 43b5fd30bc5ca54e2e29c39393b9baed240d8f93b2483e14ec695a0c0c6fd836