Malicious PDF — malware analysis report

Static analysis result for SHA-256 caafddaf15ceb75b…

MALICIOUS

PDF

68.6 KB Created: 2021-02-03 01:15:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 40eb84577c2e54869434de35571d39a1 SHA-1: b41123bd7235469969dd770618552f866a7806fc SHA-256: caafddaf15ceb75b266931d1f927aa951707b905a8b7b0d37cd709ac431ec5b5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://jacksth.ru/123?utm_term=what+is+comma+splice+and+run+on+sentences PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366959/normal_6017a792b1f73.pdfIn PDF document text
    • https://cdn.sqhk.co/xagegegozi/Aja2rgg/bottle_rock_2020_lineup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451762/normal_5fd86c9667d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498883/normal_5fe6a1ca0f08d.pdfIn PDF document text
    • http://sayfelengs.space/83249633272jwcbd.pdfIn PDF document text
    • http://gagerovovus.22web.org/command_and_conquer_tiberian_sun_trainer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/fesizazikegajek.pdfIn PDF document text
    • http://vizulubafaxal.epizy.com/79569380167.pdfIn PDF document text
    • http://retesatitogeli.epizy.com/luweza.pdfIn PDF document text
    • http://vufilupirudote.rf.gd/welujuwukozuzexofopim.pdfIn PDF document text
    • http://ruxurosagogaru.epizy.com/sejisitevusazugogeguvib.pdfIn PDF document text
    • http://jaxarafepemu.epizy.com/background_image_hd_1080p_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/45172073601.pdfIn PDF document text
    • http://romamosok.rf.gd/75892554848.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/77183620853.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD198 5324 bytes
SHA-256: c9b39018791d024a973624f4631809155555481789089f4a99475116097f5452
font_01_sfnt_off0000e38f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38F 9900 bytes
SHA-256: e86fae0446c108e44e21a2c82f3697b5b87f9e6154bb759cc9e090e89beb1193