Malicious PDF — malware analysis report

Static analysis result for SHA-256 828c454477438e35…

MALICIOUS

PDF

35.8 KB Authoring application: GIMP First seen: 2020-09-15
MD5: 103317f42e7bae15f3e469e21280178c SHA-1: e83700542871ee7ecf4971fe351358fce21e8dc6 SHA-256: 828c454477438e35314dc1be1ab77edb3ea7fedf4e6ae416df51be3be431c1d2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, and the document body contained mostly garbage data, making the link farm the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://hostmaster.linda-daunter.uk/uploads/1/3/0/9/130969438/pixoz.pdf In PDF document text
    • http://tulatech.com/uploads/1/3/0/7/130738975/dinelazobujis.pdfIn PDF document text
    • http://economicstitan.com/uploads/1/3/0/6/130604744/7cc3f737c537ff1.pdfIn PDF document text
    • http://simplycfood.com/uploads/1/3/0/6/130620532/pirixir-perawujik.pdfIn PDF document text
    • http://crimsonentertainmentllc.com/uploads/1/3/0/7/130775339/39d352.pdfIn PDF document text
    • http://sonoratradingpost.net/uploads/1/3/0/7/130774981/defuvageded.pdfIn PDF document text
    • http://2catsinabox.com/uploads/1/3/0/7/130775267/ca1ec2cd6996a.pdfIn PDF document text
    • http://carolinelindley.com/uploads/1/3/0/4/130435524/2799005.pdfIn PDF document text
    • http://uptimemanutencao.com/uploads/1/3/0/2/130287310/wugozesojegasejobopu.pdfIn PDF document text
    • http://abnerdelnorte.com/uploads/1/3/0/3/130313108/tegevumim_buripopade_suranigodo_perima.pdfIn PDF document text
    • http://rvpartsandcarts.com/uploads/1/3/0/4/130489367/xefukopetid_puvurujidobod_jafamuzuzoloruz_rewij.pdfIn PDF document text
    • http://habitmkr.com/uploads/1/3/0/6/130603811/2010064.pdfIn PDF document text
    • http://ianwalkerlaw.com/uploads/1/3/0/2/130289549/nenumerazizamuve.pdfIn PDF document text
    • http://chuyitos.com/uploads/1/3/0/5/130589126/sabus.pdfIn PDF document text
    • http://motortrainingtotaal.com/uploads/1/3/0/5/130588893/0481f674f.pdfIn PDF document text
    • http://nakomagraeagle.com/uploads/1/3/0/7/130739454/9147007.pdfIn PDF document text
    • http://escaperoomfairfax.com/uploads/1/3/0/7/130739278/4658829.pdfIn PDF document text
    • http://weed-feed.me/uploads/1/3/0/8/130814960/jonub.pdfIn PDF document text
    • http://famcoinsurance.com/uploads/1/3/0/4/130483337/bugigosejor.pdfIn PDF document text
    • http://fittiewedding.com/uploads/1/3/0/4/130477775/namiwilasaguvi_luvepof_xedepo.pdfIn PDF document text
    • http://onlinenursingdegrees.net/uploads/1/3/0/2/130270932/tuwepe.pdfIn PDF document text
    • http://nathaniel-e-yamamoto.com/uploads/1/3/0/7/130775593/dulotunivugazip_memepumulotudi_fugugiterija_gibinev.pdfIn PDF document text
    • http://www.sunshineuniquedetailing.com/uploads/1/3/0/4/130483573/8908746.pdfIn PDF document text
    • http://511.bpmtc.com/uploads/1/3/0/2/130289498/130289498.html#bio+rad+gel+electrophoresis+youtubeIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27AF 8376 bytes
SHA-256: 14541ceea8469787d21285c8e645954b17884f5ec9965411e176fa3ed3fdaacd