Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edc86f58973d9ac…

MALICIOUS

PDF

56.3 KB Authoring application: LibreOffice Draw
MD5: 2c29c1c8eab23c0977cb2eb7fdc7ac99 SHA-1: a5121f201bc105f4459c83ce1659cca54e88bafe SHA-256: 8edc86f58973d9ac4d8e74c8d7331d1937d1236108a1b74a249cd494aef47d3b
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lakegeorgebrewhouse.com/uploads/1/3/0/6/130620512/6049060.pdf
    • http://uxpuli.com/uploads/1/3/0/5/130588893/af41d5b07839ea.pdf
    • http://adentabrasil.com/uploads/1/3/0/3/130313005/3685710.pdf
    • http://millenniallov3.com/uploads/1/3/0/2/130291809/valijasotudorusate.pdf
    • http://bearridgedoodles.com/uploads/1/3/0/8/130814462/9605630.pdf
    • http://diymaniacs.com/uploads/1/3/0/3/130379294/9691efe0e6.pdf
    • http://wikiword.biz/uploads/1/3/0/3/130379341/lobose_kegixuxarab.pdf
    • http://bailefangyulechengshizhendema.br3h.com/uploads/1/3/0/6/130639100/9049869.pdf
    • http://perthcleaningservice.com/uploads/1/3/0/5/130545185/35a3b8e15d8e.pdf
    • http://mx.wenonahlibrary.com/uploads/1/3/0/7/130775998/4f001d0f53.pdf
    • http://spirituallyyou.life/uploads/1/3/0/7/130738771/8a192c75.pdf
    • http://crowdergize.com/uploads/1/3/0/4/130488754/zixofol.pdf
    • http://zarkrifle.com/uploads/1/3/0/2/130289333/9214356.pdf
    • http://www.business-transformation.nl/uploads/1/3/0/7/130739517/balanegaga.pdf
    • http://jodiemarlow.yoga/uploads/1/3/0/9/130969897/ludutev-fadeteti-pubifotug.pdf
    • http://clcboston.com/uploads/1/3/0/3/130323271/e8e775a5.pdf
    • http://saltcitysoccer.com/uploads/1/3/0/2/130272372/rumeted.pdf
    • http://thesplinteredmind.com/uploads/1/3/0/6/130621947/443714cc16.pdf
    • http://mta-sts.mail.winfielddsm.com/uploads/1/3/0/2/130272648/46de7.pdf
    • http://mintersgalaxy.com/uploads/1/3/0/5/130551008/977768a0a01fb.pdf
    • http://kayla2016.com/uploads/1/3/0/5/130589085/kewet.pdf
    • http://daniellevgoodwin.com/uploads/1/3/0/6/130620705/dixatotedozi-xefebagozeludut.pdf
    • http://www.jaygoldbergcpa.com/uploads/1/3/0/5/130589305/2414035ca759b1.pdf
    • http://theshopballard.com/uploads/1/3/0/7/130739133/juriruvofi_nugujulodanila_rizolukelaref.pdf
    • http://driversboost.com/uploads/1/3/0/4/130477455/4ea11.pdf
    • http://zpo9t.bpmtc.com/uploads/1/3/0/2/130288551/130288551.html#aspartato+aminotransferase+tgo

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005198.bin
9cd5cc531f0dda71e7ee4f5397d60992eaf3a6621acc33ab071c0554e88bc385
pdf-font-stream PDF embedded font (sfnt) at offset 0x5198 16104 bytes
font_01_sfnt_off00006631.bin
60b2ab7bf5fe277003120e8c54150424784ae7fe077d00f169b7647be2cedfd6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 3564 bytes
font_02_sfnt_off0000758b.bin
6a35908c5677b7a787278a10cccc064268049a480815859ce262945b6bfc728e
pdf-font-stream PDF embedded font (sfnt) at offset 0x758B 9980 bytes