Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee93ece7fd63f80d…

MALICIOUS

PDF

72.9 KB Created: 2021-01-20 15:09:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8476022449ba9186edbdb69de09584c SHA-1: 0d04a410756609cb1ef39157aa08ba4f7de94dcf SHA-256: ee93ece7fd63f80d2507a5d22e9a586ab2c60beba2759b3f941ee991674d27ee
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=lovecraft%20country%20episode%2011 In PDF document text
    • https://tesajezu.weebly.com/uploads/1/3/1/4/131452821/zonavuporali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f89d85591ae2.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/xitikini.pdfIn PDF document text
    • https://gibejuta.weebly.com/uploads/1/3/0/7/130776113/3056340.pdfIn PDF document text
    • https://bovuzujavus.weebly.com/uploads/1/3/5/3/135326818/tupibakebemu.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/95bf707300073.pdfIn PDF document text
    • https://bugajujifupub.weebly.com/uploads/1/3/4/8/134894919/afceac510f01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5f93dffb8aa75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466676/normal_5fcbbe5977f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393183/normal_5fa1b3de2e4e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_5fb9fd0a508fd.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/kulamumujelile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5fa1ce909827f.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/piwanisaj/corbett_maths_5_a_day_higher_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/medufitijujifusuxudejapov.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_off0000e163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE163 5272 bytes
SHA-256: bbb2cf3fa6b7d9dfe9df97606be81a85967c87fa4d57ea1f04c617ffe9afde76
font_01_sfnt_off0000f379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF379 10340 bytes
SHA-256: c18a86c5afbd5f25821479635c3804b459a0ebb4ab0b8615bcff33edf7d2ecac

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