Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e23caae3e42aef0…

MALICIOUS

PDF

67.7 KB Created: 2021-02-17 04:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 944d6829cb4ef21c9147cd05fe97db3b SHA-1: 48629486bbbe453126a5ef1b0326a019303c446c SHA-256: 1e23caae3e42aef0afa4bc60639475bafb1fe317da2223d9dfd8218c1b031c2d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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 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://yafferge.ru/wix?keyword=cooking+syringes+for+sale In PDF document text
    • http://nosinoski.shop/795843750335e0tc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_6021f0ef8d1b1.pdfIn PDF document text
    • http://dorightunion.com/70626866642brcvy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_6016d9e171f54.pdfIn PDF document text
    • http://omerkatanalp.com/vexewuwovkcr59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444648/normal_5fdeb5390c8b6.pdfIn PDF document text
    • http://shopsmmv.site/pifefuzenelorepunojetisba2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473892/normal_6019fff81ca9d.pdfIn PDF document text
    • http://fumigatoff.online/75752828631wtow1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446781/normal_5ffec1dad2085.pdfIn PDF document text
    • http://maletewidulebil.iblogger.org/ketamage.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380209/normal_5fe5a15317297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5ff95ec6c9587.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://misosemarimo.rf.gd/motalabixun.pdfIn PDF document text
    • http://kiburomuwilun.epizy.com/vemutij.pdfIn PDF document text
    • http://vamudijikepefos.rf.gd/tijuxuzapumalokafonokanar.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/vizaxezotak.pdfIn PDF document text
    • http://jekoradamotud.epizy.com/branches_of_geography_worksheets.pdfIn PDF document text
    • http://zuwemanikipe.rf.gd/takewimosasixurajewowox.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/vasimovebizemeboral.pdfIn PDF document text
    • http://mapexas.epizy.com/kasatagixodenogal.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/consistency_of_standard_cement_paste_lab_report.pdfIn PDF document text
    • http://denuvifateve.epizy.com/stacy_s_mom_parents_guide.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_off0000cd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD83 5004 bytes
SHA-256: e7e23367c308cfcc136a530ba470a0bdaa06f2a3460ac3bb3e729e23f55f3900
font_01_sfnt_off0000dea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA4 10256 bytes
SHA-256: 2865e099648b9ef05ba10743eb51b404b548716b0176a24f0c97cb713a1e4abd