Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf485214a44b56f…

MALICIOUS

PDF

65.8 KB Created: 2021-02-16 13:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c95c6ed7791a79fedd51d8204f579cf2 SHA-1: 11e3b3c828dfe871c40deaf042888e3660b5bf90 SHA-256: 2bf485214a44b56ff9232ca80d37bbce2fa13a8862dbe05d35043f95de7c5d12
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wb?keyword=astro%20a20%20wireless%20ps4%20manual PDF link annotation
    • https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/fivov.pdfIn PDF document text
    • https://cdn.sqhk.co/jebixusugak/Vjbzrha/firabi.pdfIn PDF document text
    • http://cosmicgig.com/66267557889278i2.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/31c599a61.pdfIn PDF document text
    • https://wivusogonelom.weebly.com/uploads/1/3/5/3/135310870/2520646.pdfIn PDF document text
    • http://haifaiv.ru/download_song_thukra_ke_mera_pyare34xo.pdfIn PDF document text
    • http://datingdate.site/totekobiweziga4a4f5.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/o5egdgc/worosopipe.pdfIn PDF document text
    • http://batmbatm.ru/xekugezojarugejuwuzukijomziok5.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/bGieMge/fireman_ed_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sajatanugeg/ajzjgge/vawumafovakubi.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/vitelitubovuluj/animal_farm_annotations.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/zolunorasawakopigor.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/bcbswny_medicaid_prior_authorization_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/famuzuna.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_off0000c23a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC23A 5408 bytes
SHA-256: 63df2aef13b3dbac859aec6465b32cbfd2f287e678d3018c2408d21bb304ca25
font_01_sfnt_off0000d4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A5 11212 bytes
SHA-256: ae05c7e9170a1d2a3940cf6f9b9358453f69dd1c11e6c841fb5c92d994b1ef4d