Malicious PDF — malware analysis report

Static analysis result for SHA-256 5648d3ba6ce6e064…

MALICIOUS

PDF

84.2 KB Created: 2021-03-24 07:30:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 44e26b0341e389479104a93367c46120 SHA-1: 4f0298b018d2187ecd1bb4de75a6aea308aa6d70 SHA-256: 5648d3ba6ce6e06419cb36ac3e594ae19d90bca7fad2be15f599978181bbd0f3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The primary URL suggests a phishing lure related to 'act 3 scene 2 hamlet pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://nipisod.ru/award?keyword=act+3+scene+2+hamlet+pdf PDF link annotation
    • http://gijaninapumobe.sportsontheweb.net/61151738133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_60277ffdd8798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470387/normal_5ff289678dffd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5fee6127af69f.pdfIn PDF document text
    • http://sitizinudex.getenjoyment.net/sears_appliance_repair_service_call_cost.pdfIn PDF document text
    • http://gosunenibunale.getenjoyment.net/22649240915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462696/normal_604e7bf81bfb4.pdfIn PDF document text
    • http://fisifur.iblogger.org/8764254786.pdfIn PDF document text
    • http://levojefozaloro.mywebcommunity.org/behaviour_management_pocketbook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497358/normal_601bace7962aa.pdfIn PDF document text
    • http://lusoxebi.iblogger.org/41394480658.pdfIn PDF document text
    • http://miwukewemiko.22web.org/46638577078.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxajez.rf.gd/how_to_fix_my_frigidaire_washing_machine.pdfIn PDF document text
    • http://xitutudatiri.epizy.com/40005569394.pdfIn PDF document text
    • http://mukadepokexow.epizy.com/how_do_i_find_my_three_star_signs.pdfIn PDF document text
    • http://nekelaxowe.atwebpages.com/65237322898.pdfIn PDF document text
    • http://wawugodeti.epizy.com/71201254992.pdfIn PDF document text
    • http://sofibimibojas.myartsonline.com/my_cloud_home_apple.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_off00010e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3F 5584 bytes
SHA-256: 0c606f859f0f647475f312845e034604da3bf35f94c62f4668b060ac1bc80333
font_01_sfnt_off00012121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12121 10300 bytes
SHA-256: 14c50aad800628bc5ace27ccc81b05ddc2f6cd12fb8892c0d1a3fc1d9aeb7078

Open this report in the interactive analyzer, or submit your own file for analysis.