Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3af7b38481d4fb9…

MALICIOUS

PDF

124.8 KB Created: 2021-03-01 01:53:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 45ef2ae034bc18655dcc42164a53761a SHA-1: 4f02b5faa4fc8e2527fdb7db6fbfa008454fe2e6 SHA-256: f3af7b38481d4fb97b462c19fee68c2203a9f7c9e5fb7d0a7cb5e41f2036929b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to 'https://xezojetit.ru/award?keyword=cat+3126+parts+catalog', which is likely a phishing or malware distribution URL. The PDF structure and embedded content suggest it's designed to trick the user into interacting with this malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/award?keyword=cat+3126+parts+catalog PDF link annotation
    • http://xilenemivagola.mywebcommunity.org/12291090699.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/98778942006.pdfIn PDF document text
    • http://fovoxarofej.getenjoyment.net/hp_elitebook_8540p_battery_calibration.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_603763837fba9.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/yongnuo_yn-568ex_ii_nikon_review.pdfIn PDF document text
    • http://fogugevup.22web.org/excel_to_google_sheet_not_working.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/60869955405.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/relion_confirm_meter_manual.pdfIn PDF document text
    • http://ketaton.mywebcommunity.org/how_to_check_if_motherboard_and_cpu_are_compatible.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/liwara/manual_digital_cd_press_clasa_5_informatica.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/vokajarovamodi.pdfIn PDF document text
    • http://gixisenusadat.rf.gd/60140280812.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/lazy_song_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/ranger_bard_guide_aura_kingdom.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/42894847159.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/two_way_radio_shoulder_holster.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/apologia_advanced_biology_module_5_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/diatonic_triads_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/7199715431.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/page-_break-_inside_avoid_not_working_mpdf.pdfIn PDF document text
    • http://dobejevilorizu.epizy.com/64289124475.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_off0001aef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AEF6 5508 bytes
SHA-256: 127e5af18639a5e848678488d8f9433cbdc799f0c7e59bfe28d83601f5f7fedf
font_01_sfnt_off0001c1bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C1BB 10608 bytes
SHA-256: 943d67046be014b2d561a2af20cc8091b63e7bb85dda4e5f8452e219fafd8cc1

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