Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d1331fa20cea7ba…

MALICIOUS

PDF

70.0 KB Created: 2021-01-29 15:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ab52214351429f454a40cb4d1ade0859 SHA-1: 417c04c0feccb2bf67548c38f939d68e3dc2691d SHA-256: 8d1331fa20cea7ba9fbd4c848b813ae04d6ee874539dd3808a0ae18e10310778
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://leonvi.ru/aws?utm_term=natural+rubber+sheets+for+sale PDF link annotation
    • http://gijofabenetawix.66ghz.com/22840058292.pdfIn PDF document text
    • http://lodixewovufosa.iblogger.org/transformational_leadership_styles_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/zggLgHQ/bowling_alley_kingston_pike.pdfIn PDF document text
    • http://wumakelanatug.22web.org/false_ceiling_catalogue_for_bedroom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393626/normal_5ff5bc9accdb1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://napepezubebefiw.epizy.com/vojunivebigebizesukefedel.pdfIn PDF document text
    • http://xenilesaripesu.epizy.com/bhoot_returns_full_movie_hd_free.pdfIn PDF document text
    • http://bomepexajusopa.epizy.com/53683747727.pdfIn PDF document text
    • http://pijularof.epizy.com/42215550185.pdfIn PDF document text
    • http://lewimidofi.epizy.com/zigijitofemekirobej.pdfIn PDF document text
    • http://mafolizol.rf.gd/a_a_ki_full_form.pdfIn PDF document text
    • http://denufukis.epizy.com/courtesy_call_email_template.pdfIn PDF document text
    • http://wivowutone.epizy.com/39507670437.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/gofumokukesotuma.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/self_forming_base_quiche.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_off0000d39a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39A 4964 bytes
SHA-256: af1df6a93edc66c2b21da05bf6c1b1d9c01ddc996f491e3e153c32b76892465f
font_01_sfnt_off0000e476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE476 11360 bytes
SHA-256: 6e65e7d3247f5d9d9d77b4d9c32476e1f211e85d05681fe666632b4fdeaed654