Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ae04e869d76cff…

MALICIOUS

PDF

82.5 KB Created: 2021-03-04 15:33:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: daa50f7cb3cbbaa9c8c1d62211422087 SHA-1: 4710767af3dc0e2618953bdff2a774b83062c52f SHA-256: 42ae04e869d76cff1140310920829dedbd463c3c02d90fd6c943b417279ea654
126 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'why do cecily and gwendolen keep diaries' and embeds a URL pointing to a suspicious domain, jumiwimov.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=why+do+cecily+and+gwendolen+keep+diaries PDF link annotation
    • https://pupalizote.weebly.com/uploads/1/3/4/7/134716330/daburojaledamona.pdfIn PDF document text
    • https://kewakovek.weebly.com/uploads/1/3/4/4/134467638/kukegimadumemit.pdfIn PDF document text
    • https://kilekawu.weebly.com/uploads/1/3/4/8/134857711/gigazawovegades_muxivitegexiru_tenaguxiwotewi_lireli.pdfIn PDF document text
    • https://mikakegurotitu.weebly.com/uploads/1/3/4/3/134309030/ec12697.pdfIn PDF document text
    • https://netexebi.weebly.com/uploads/1/3/0/8/130815192/zasipeku.pdfIn PDF document text
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/7cdd1a197f6e6ea.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/fovezewi/pinevifabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2b42e19-2c32-49cb-aec1-b91eabedf00c/syncopation_drum_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/multivariate_data_analysis_joseph_hair.pdfIn PDF document text
    • http://zezunas.epizy.com/jorijenesibuxoluzesoz.pdfIn PDF document text
    • http://debalipusafuj.epizy.com/ferris_mower_parts_list.pdfIn PDF document text
    • http://soranodabiwegi.myartsonline.com/88924764627.pdfIn PDF document text
    • http://sisufovofow.atwebpages.com/41744715263.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/los_paises_hispanohablantes_crossword_puzzle_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2715405-4c0a-4109-8576-ca175ceab308/fepurate.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/99608918455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9d0590-da68-4490-9273-e64ac1e320cb/how_to_fix_a_jammed_pellet_stove_auger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7336c8b3-3e78-45ba-81aa-2feb496478af/57898832082.pdfIn PDF document text
    • http://zavodopivuzaraf.epizy.com/beruzuler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4d2b62-f5a8-4b19-b954-1c41a144f4bd/moxadir.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_off000105e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E4 5608 bytes
SHA-256: b67308cda7bc76d04e9dc9417630ad9d0bf3921375fa5d405ec3ca52884c1b49
font_01_sfnt_off00011912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11912 10240 bytes
SHA-256: 69e4c59bf08110116a7f1d3a843f5e33a75974c08781478b910486e25a234878

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