Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae93992b11c8766…

MALICIOUS

PDF

67.4 KB Created: 2021-03-02 05:00:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f883c3503038e38637ea00e62fc5730c SHA-1: 77302aede8e6c7b447f7156481e3c9395196031b SHA-256: bae93992b11c87661e4d54bb26698720151e044c361961a4c358365bd1c916c9
186 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.
  • 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://jumiwimov.ru/wb?keyword=canon%20pixma%20mg3520%20ink%20replacement PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463277/normal_5feda2c4dc646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_601b0ac7994dc.pdfIn PDF document text
    • http://dedekuwetom.iblogger.org/lovizamotojikefovajipi.pdfIn PDF document text
    • https://legovizadedugid.weebly.com/uploads/1/3/1/8/131856283/4413ee56cbb1fe1.pdfIn PDF document text
    • https://nupurotuxi.weebly.com/uploads/1/3/4/8/134854616/bixotedi.pdfIn PDF document text
    • https://metasabuvaro.weebly.com/uploads/1/3/2/6/132681671/054edfa.pdfIn PDF document text
    • https://xonodomewavewa.weebly.com/uploads/1/3/5/3/135316089/boporotepitowet.pdfIn PDF document text
    • https://pilidikuvitas.weebly.com/uploads/1/3/4/7/134766888/1320b8.pdfIn PDF document text
    • http://loxotuxer.22web.org/how_to_connect_jawbone_up3.pdfIn PDF document text
    • https://xetupowo.weebly.com/uploads/1/3/1/3/131382232/lirevudasudiva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiguwafagez.rf.gd/86728442524.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/flight_games_for_pc.pdfIn PDF document text
    • http://napepezubebefiw.epizy.com/joining_report_format_for_central_government_employees.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/metallica_master_of_puppets_box_set.pdfIn PDF document text
    • http://fegumipidibig.rf.gd/bobbi_brown_makeup_manual_review.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_off0000c7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D8 5676 bytes
SHA-256: 020d9c47c00ba1548b288bd7fded1bfa38928697e8624f035d6bf5c4aeeb2036
font_01_sfnt_off0000db2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2A 11028 bytes
SHA-256: e3e3b397f607acd83814fc5e041903927f944bd37c85417c22dbc86ff88c2640