Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9cefada0c66457…

MALICIOUS

PDF

63.9 KB Created: 2021-02-10 09:22:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4eb5b6ec8ae7e51b6c5cf3dd89323d5c SHA-1: e6ce5722cf81f08fbc41dedd03ec4e8b247fc6f6 SHA-256: 7e9cefada0c66457422dc972ad3393dc7a138363cdfa76a70421ee1ac1349223
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://bologen.ru/123?utm_term=communication+devices+short+definition PDF link annotation
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/3174759.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384484/normal_5fccbef1a3d1d.pdfIn PDF document text
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/093831e4c645.pdfIn PDF document text
    • http://uscovidcharts.com/klasifikasi_space_maintainer6ks97.pdfIn PDF document text
    • https://nunajamedagafep.weebly.com/uploads/1/3/5/3/135325778/3150456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448345/normal_5fff6693d0a9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_6017502fa3144.pdfIn PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/ragupo_demumop.pdfIn PDF document text
    • https://fejuzewe.weebly.com/uploads/1/3/4/8/134883228/tesafof_faluravusukep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417664/normal_5ff8677ddfa24.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/kotodur/help_a_reporter_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/29128793999.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/63239490253.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/donoghue_v_stevenson_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/stages_of_mitosis_worksheet_instructional_fair_inc.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_off0000be53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE53 5196 bytes
SHA-256: 248dcb5b20eae1e2c5a30391dbafcd230b2f82d2805aebffb31c0fe48eeb090f
font_01_sfnt_off0000cfd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD7 10240 bytes
SHA-256: 126b352f4571d8b22cef10783aeb2178d3dea9ff61b5ed94178d84419cddeef1