Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1acda407b86d7e…

MALICIOUS

PDF

71.0 KB Created: 2021-03-14 13:13:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 187002b1a4219164678627af635e3b02 SHA-1: c8b8ebff09cee0cdcee4645bc9c2937c99c5c4bd SHA-256: 3e1acda407b86d7ee4eac01cbb0f7ebe2fc757a1e090614aa5ef18bc84372ebd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a dictionary PDF, likely as a lure to redirect users to a malicious website. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the embedded URI is the primary indicator of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://lozipotod.ru/award?keyword=oxford+picture+dictionary+third+edition+pdf+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407070/normal_5fffade120409.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486368/normal_5fca89f667083.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/0hijghg/ac_ampere_meter_connection.pdfIn PDF document text
    • http://gaxenop.medianewsonline.com/89121865680.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/bhgCN3z/weather_forecast_new_york_city_october_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_5feb5e25d9830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467564/normal_60097d20d500a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460071/normal_5fd8cedf95962.pdfIn PDF document text
    • http://kalidejomepajo.scienceontheweb.net/finding_forrester_questions_for_discussion.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/nZjhgjV/famous_blues_musician_redding.pdfIn PDF document text
    • http://wepijafiguwenan.mywebcommunity.org/32745849628.pdfIn PDF document text
    • http://faxizila.iblogger.org/register_form_design_template.pdfIn PDF document text
    • https://cdn.sqhk.co/nusideja/aoBvij8/valentine_tic_tac_toe_svg_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484365/normal_600e8ef60a1a9.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/OhcXier/steelers_ravens_2020_live.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459176/normal_5ff36d1e952be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384149/normal_60006b7f388fb.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/cHwVRw8/pac_man_championship_edition_dx_multiplayer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://voruluju.epizy.com/edna_mode_glasses_template.pdfIn PDF document text
    • http://kagexiju.rf.gd/radoj.pdfIn PDF document text
    • http://rinivuwuvo.epizy.com/exercice_algorithme_tableau.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/bmw_approved_used_car_checklist.pdfIn PDF document text
    • http://gexilel.rf.gd/zajujiw.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_off0000d8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FB 5228 bytes
SHA-256: 9bef8319e85b327ba91f9b4390a95cdaa28f7b4cb87de66a41b5083c981005f2
font_01_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 10340 bytes
SHA-256: 890ca009eee0fc4de9c0e71772ba45a122e0c678b414ad4463d3e98d51b175cb

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