Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53d85c6e785e2df…

MALICIOUS

PDF

70.5 KB Created: 2021-03-03 17:57:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 231d2d61c29b85bc01d3aaac5da7ddf9 SHA-1: 91bb6352b699428d3aad7f75b24a09deef301eda SHA-256: b53d85c6e785e2df172eda5b8dc4e3b6ed421e7b48b6580c8a53655b33e2fee9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=dune+racer+power+wheels+manual PDF link annotation
    • https://kitawusew.weebly.com/uploads/1/3/4/2/134234725/03572feee3716.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/genie_garage_door_remote_reset.pdfIn PDF document text
    • https://vuminuzatadabem.weebly.com/uploads/1/3/4/3/134311796/ba4d584fe06.pdfIn PDF document text
    • https://zegosonov.weebly.com/uploads/1/3/4/1/134109065/vewakumem_revirilop_zevaramokijat.pdfIn PDF document text
    • https://masizomomom.weebly.com/uploads/1/3/2/6/132681315/bigavogugewafuretise.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/cS3yiiQ/rapiveribozis.pdfIn PDF document text
    • http://vojemodipu.sportsontheweb.net/dirosifajetevelex.pdfIn PDF document text
    • https://rofujerejikuf.weebly.com/uploads/1/3/5/3/135388349/gutagapigitawifariv.pdfIn PDF document text
    • https://cdn.sqhk.co/sasibasodiwu/AjHVhhm/bulaxiripawedisesub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimobepetokonud.myartsonline.com/difetewetoluwimujugivo.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/glorious_choir_sheet_music.pdfIn PDF document text
    • http://ziwivazud.onlinewebshop.net/dilak.pdfIn PDF document text
    • http://refawolasuwibi.epizy.com/44185615577.pdfIn PDF document text
    • http://vasunid.rf.gd/avery_5160_label_template_word_2016.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_off0000d6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AA 5264 bytes
SHA-256: c764e62c4bf67b0a6bd070bbfe584a50863b4eaa459eda5fb7ad7bd980b17332
font_01_sfnt_off0000e87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87D 10716 bytes
SHA-256: f904d5bf0ee968e79ccbb46a247b8833caba1ca7db8652d4890ba5ead3e426e5