Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f4ce8bc868a989…

MALICIOUS

PDF

72.6 KB Created: 2021-02-23 00:32:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4feb01772ab69a60f5f6c79c76e0e414 SHA-1: a8de26eebf979ea4bd21d2c9a22bd6b42fe0bce9 SHA-256: 43f4ce8bc868a9894836f919bf34a785c008bdf08129f8bfbf975997d720866f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=sample+letter+to+executor+of+estate PDF link annotation
    • https://cdn.sqhk.co/vekuperik/hcghoic/climbing_axe_the_forest_2019.pdfIn PDF document text
    • https://voperupazekeko.weebly.com/uploads/1/3/4/5/134505312/jemisedibeve-wekimexiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410954/normal_5fed41058a6ca.pdfIn PDF document text
    • https://popofexepazor.weebly.com/uploads/1/3/2/6/132680818/mizasim.pdfIn PDF document text
    • https://xajerunufunofe.weebly.com/uploads/1/3/1/3/131378991/nuzexilu-luzifujug.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/1jdighc/69174710224.pdfIn PDF document text
    • https://vetenejoxo.weebly.com/uploads/1/3/1/3/131379321/bafuferewoda-xixizapatama-sowugoliwesib-ranunetejoj.pdfIn PDF document text
    • https://cdn.sqhk.co/senepaderu/SmEWoib/dozezegufaluzulanulojagi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5fd77036eea52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_5ffbe57a5f066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_6022b1b82cb54.pdfIn PDF document text
    • http://raifaisentgo.online/volatility_command_cheat_sheetegcpj.pdfIn PDF document text
    • https://cdn.sqhk.co/zaxuloxedu/X748jbg/88508023980.pdfIn PDF document text
    • http://obmenkalnr.online/wepavonolerosajus0e8s.pdfIn PDF document text
    • http://vovpomnim.ru/luna_fate_mage_guidelcp1v.pdfIn PDF document text
    • https://vitasexabu.weebly.com/uploads/1/3/0/8/130813400/9202f6f96fbfb.pdfIn PDF document text
    • https://dunelakanova.weebly.com/uploads/1/3/1/4/131410870/089b03c72.pdfIn PDF document text
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/pabibagov_domumobuvojenif_fuxib_fatut.pdfIn PDF document text
    • http://maykistore.ru/download_game_virus_war_mod_apk3b8x1.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/dEBhahd/smithsonian_channel_new_shows.pdfIn PDF document text
    • https://siviwoxepigomuz.weebly.com/uploads/1/3/0/7/130739754/99bdd0be331f.pdfIn PDF document text
    • https://vunojomilubokub.weebly.com/uploads/1/3/0/7/130775688/4838816.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ddae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAE 5332 bytes
SHA-256: f1ecae8a1767465d4c2fa65b4eed6baed52f94d61be6ce541be2ea31bfd9ab92
font_01_sfnt_off0000efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBE 10392 bytes
SHA-256: f21de54ca7caf2d3f8f4cefa798ecef3a4954fe89e5369fa2dcb8e770220b8df