Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0543f14e5e42ad9…

MALICIOUS

PDF

83.4 KB Created: 2021-06-05 15:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 709c232cb96a82c9793248ed033c20d7 SHA-1: 3ed8701b1eaa27cd4ec8021de7e06b092508b999 SHA-256: e0543f14e5e42ad986b54db0bad3262918a47c5a157f106b840026bbe93f48c7
134 Risk Score

Malware Insights

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

The PDF contains a link farm and a suspicious URL, suggesting it's designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cructi.ru/pbw?utm_term=how+much+does+it+cost+to+get+mpesa+statement PDF link annotation
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/2446412.pdfIn PDF document text
    • https://wukajimodowel.weebly.com/uploads/1/3/0/8/130874313/powasikowotix-derukagaregevap-liwuzekifuzaj.pdfIn PDF document text
    • https://tegikokawotivax.weebly.com/uploads/1/3/4/7/134759165/mokub.pdfIn PDF document text
    • https://xinufagepowe.weebly.com/uploads/1/3/4/4/134437511/1655245.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nugewil.pbworks.com/f/how_to_update_sbb_key_programmer.pdfIn PDF document text
    • http://beratirupo.pbworks.com/f/xaxosa.pdfIn PDF document text
    • http://negaboxa.pbworks.com/f/tabla_de_calibracion_de_bujas_dodge.pdfIn PDF document text
    • http://pamotekegopa.pbworks.com/w/file/fetch/144476703/8715110147.pdfIn PDF document text
    • http://xugilip.pbworks.com/w/file/fetch/144575940/maxenawedu.pdfIn PDF document text
    • http://vazesuna.pbworks.com/f/blue_prism_mapiex_latest_version.pdfIn PDF document text
    • http://sisagexal.pbworks.com/f/what_is_edi_payments_from_amazon.pdfIn PDF document text
    • http://lakebimutep.pbworks.com/f/45837877842.pdfIn PDF document text
    • http://nunaruribeg.pbworks.com/f/behavior_intervention_plan_example_high_school.pdfIn PDF document text
    • http://gepefupugalu.pbworks.com/f/what_can_u_bake_without_eggs.pdfIn PDF document text
    • http://pebokuvog.pbworks.com/w/file/fetch/144523728/gta_5_free_shark_card_code_generator.pdfIn PDF document text
    • http://fufitiruw.pbworks.com/w/file/fetch/144426090/xojavudubedatiwuzu.pdfIn PDF document text
    • http://zegugas.pbworks.com/w/file/fetch/144411402/98489508918.pdfIn PDF document text
    • http://gamaxidad.pbworks.com/w/file/fetch/144535920/capm_exam_prep_fourth_edition_rita_mulcahy.pdfIn PDF document text
    • http://demopefo.pbworks.com/f/bebokelixakurulimigetarab.pdfIn PDF document text
    • http://pokatufaxi.pbworks.com/f/22407414983.pdfIn PDF document text
    • http://vimadutukad.pbworks.com/f/solucionari_matematiques_2_batxillerat_mcgraw_hill.pdfIn PDF document text
    • http://katafuzum.pbworks.com/f/how_to_use_a_coleman_catalytic_heater.pdfIn PDF document text
    • http://polubisoxuwo.pbworks.com/w/file/fetch/144505350/xenajinikibelow.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_off00010915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10915 5412 bytes
SHA-256: dcf7254efadc163f5131fc202cc18d07b5570fdbdf9a49187ae849aeb1cc1544
font_01_sfnt_off00011b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6C 10740 bytes
SHA-256: c3a2886fe2422302239a6aba6841d07f7e67023a6efc08f744ab17f7f9d1566c

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