Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d8afa8ac8518009…

MALICIOUS

PDF

68.6 KB Created: 2021-02-26 15:15:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8d370b94a50c02b731300ace8d282bb6 SHA-1: 24cc9ca0cf8ef015d3c327969b854026f0296130 SHA-256: 3d8afa8ac85180095235924adf5fa1afafb9c2e36513c95505b5cadbe5776d1c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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.
  • 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://nipisod.ru/wix?keyword=third+grade+student+links PDF link annotation
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/xetedogesara-suzokebepirek.pdfIn PDF document text
    • https://mugebixivezir.weebly.com/uploads/1/3/1/4/131484268/aaaf5.pdfIn PDF document text
    • https://sisezapude.weebly.com/uploads/1/3/1/3/131398367/bovisawij.pdfIn PDF document text
    • https://doruxajowivabog.weebly.com/uploads/1/3/4/8/134870444/639c07e952c5526.pdfIn PDF document text
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/9167859.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/voduguzujoxoxedej.pdfIn PDF document text
    • https://zeruwowigewal.weebly.com/uploads/1/3/0/8/130813736/1be0ebc.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/8179495.pdfIn PDF document text
    • https://momuxubodi.weebly.com/uploads/1/3/1/3/131379397/3781834.pdfIn PDF document text
    • https://fozabezadako.weebly.com/uploads/1/3/4/6/134639332/toxufagupe.pdfIn PDF document text
    • https://duzufeto.weebly.com/uploads/1/3/4/7/134734580/f89be2.pdfIn PDF document text
    • https://nadagedo.weebly.com/uploads/1/3/1/8/131858166/a036fca57a165.pdfIn PDF document text
    • https://dawopodesolapip.weebly.com/uploads/1/3/5/3/135327749/jisip_wujofex_niwogex_vapinamusol.pdfIn PDF document text
    • https://wabelurotetef.weebly.com/uploads/1/3/4/6/134693048/6552507.pdfIn PDF document text
    • https://parafobosa.weebly.com/uploads/1/3/1/8/131857791/kojineloxirowob_fetogejitefijus.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/fosawef/step_down_transformer_block_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/weighted_average_cost_of_capital_theory.pdfIn PDF document text
    • http://gafazexetoraxik.epizy.com/ginerikotitapufupuniwe.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/megodavadurekigojevi.pdfIn PDF document text
    • http://zopumukujo.epizy.com/15302733129.pdfIn PDF document text
    • http://noxikemudenuma.epizy.com/5122842555.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/aurora_hdr_2019_free_fullversionforever._com.pdfIn PDF document text
    • http://bivuraxut.rf.gd/breezingforms_joomla_not_sending_email.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_off0000d1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B9 5100 bytes
SHA-256: 07a68b4304fe5aa5b4b25a307a0445f3a3c523d15e0422f2a281a3cdf75a14c9
font_01_sfnt_off0000e30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30B 9840 bytes
SHA-256: baff26eccc25a932beb31a7e45828226814a2e3d111836d3f89fe2b0c51d9fce

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