Malicious PDF — malware analysis report

Static analysis result for SHA-256 c701c4549ce53b80…

MALICIOUS

PDF

77.3 KB Created: 2021-04-12 16:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2fb0f010997276b674bdf95fc82e0106 SHA-1: bfa7ab2dc06f6a573e543d66ba319a232569483c SHA-256: c701c4549ce53b800c3bcbf5e4335ba36bd0dec6a26ddbdf853b5f0d38d89d50
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing attempt and a link farm, with a high ML classifier score and ClamAV detection. The embedded URL 'https://pelibifir.ru/strik?utm_term=conair+razor+reviews' is likely the primary lure, directing users to a malicious site. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics suggest it may leverage embedded JavaScript for malicious redirection or exploitation.

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 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.
  • 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://pelibifir.ru/strik?utm_term=conair+razor+reviews PDF link annotation
    • http://fosonelotila.medianewsonline.com/60149214717.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/free_writing_worksheets_for_kindergarten.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dbcef1e-da0b-414f-aa70-d895801e2a13/furumom.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/8580989023.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/pujekiga.pdfIn PDF document text
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_277335bcd61941feb7727f132359bc67.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/konuwimafetusofali.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/the_darkest_minds_2_full_movie_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/58951250028.pdfIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_85e05bb5f3a64d78b29ff1a8dfcbce06.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widofafane/is_arris_good.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/accounting_standards_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66d3bbe2-c05e-4ad3-a317-5b4ddc1cd690/troy_bilt_pony_tiller_belt_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/ordering_decimal_numbers_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/nonlinear_continuum_mechanics_of_solids.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_f2b9ff93ec1e44888309b7f2bc72ecd8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sixolose/36006314637.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/school_uniforms_uk_best.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df792661-41a2-4f3a-b534-e33475d9cbae/best_nigeria_worship_songs_2020_mp3_download.pdfIn PDF document text
    • http://wawavaroxu.myartsonline.com/alloys_and_intermetallic_compounds.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/athletics_merit_badge_workbook_answers.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_off0000ef86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF86 4752 bytes
SHA-256: 6d3bef36279b6f3545919fe2deae925d28b360164a7b43e493ada5de8315514b
font_01_sfnt_off0000ffd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD6 11516 bytes
SHA-256: 8d63ba89b79a224bc2a5c6d37b866b9b95190f6e461a95947f79249fbae426c5

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