Malicious PDF — malware analysis report

Static analysis result for SHA-256 6824564b0d35b0d4…

MALICIOUS

PDF

76.5 KB Created: 2021-03-27 15:02:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 658cb9a85d50938aad0ff4517160b914 SHA-1: 765b3793b4ce0f6249207b3ea31b2025ff9a04f9 SHA-256: 6824564b0d35b0d4445e0267ee52ecb403d235d062241149a711deedf67b149a
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The presence of an external URI and the overall detection suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=can+ergo+360+be+worn+on+back PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465257/normal_6032dbf69e4a5.pdfIn PDF document text
    • http://martakkord.ru/bhojpuri_gana_karna_video_hdjckcr.pdfIn PDF document text
    • http://hamlikjorettoop.ru/how_to_fix_ge_dishwasher_detergent_dispenserfjw3j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446398/normal_5ff38072c5444.pdfIn PDF document text
    • http://topstop.site/dopinotosejusubalozifujyjsc.pdfIn PDF document text
    • http://lazategomid.scienceontheweb.net/how_to_rewire_a_sprinkler_system.pdfIn PDF document text
    • http://shopeuro.pro/jet_car_stunts_2_full_mod_apkfvmpp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467298/normal_5fe972fa312fe.pdfIn PDF document text
    • http://ita-fitness.fun/lisadugujevitamugowuzagknj9o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390680/normal_5fef844e6d498.pdfIn PDF document text
    • http://community-day.ru/amelie_sheet_music_piano7ns9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387582/normal_5ff293b8af202.pdfIn PDF document text
    • http://luminar4-download.xyz/applied_behavior_analysis_3rd_edition2lhd3.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/julexekubaj/bolt_head_size.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/holy_quran_online_english_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/84924761532.pdfIn PDF document text
    • http://gozuketitara.onlinewebshop.net/behaviorist_manifesto.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/dugiwovimamedufe.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/maytag_centennial_dryer_heating_element_test.pdfIn PDF document text
    • http://biwosagamivi.myartsonline.com/how_to_get_the_true_ending_in_sao_fatal_bullet.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/graphing_linear_equations_with_tables_worksheet.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_off0000ed84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED84 5416 bytes
SHA-256: 596f9d8032a5e8b4c7db5c14e74816e0ceb850fb9879613d1e3dc5d2c79d224e
font_01_sfnt_off00010013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10013 10712 bytes
SHA-256: 82f37f303f7483f1feeab125365faef7adcaed5545a3f03e2fbc78bbeff33101

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