Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce15d8e3ad1adfb9…

MALICIOUS

PDF

81.3 KB Created: 2021-03-15 02:19:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86f728852248fd6d6f394ef114d2de72 SHA-1: d23f057d5fb364402c682fcf4fa39f2cbbfa004f SHA-256: ce15d8e3ad1adfb99592ba6b56c4362f9936a9d20ed8be89c6856364971fcf51
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'resalured.ru', which is likely a malicious domain used for distributing further payloads or conducting phishing. The document body, though heavily obfuscated, suggests a lure related to 'sprint triathlon races'. No scripts were extracted, but the presence of embedded URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=sprint+triathlon+races+2020
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/gevetile.pdf
    • http://zijozarub.mygamesonline.org/old_dolls_houses_for_sale_on_ebay.pdf
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/lokala.pdf
    • http://barivelovone.22web.org/android_toolbar_set_back_arrow_color.pdf
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/cff39d619ddf1d4.pdf
    • http://lezagerodise.iblogger.org/contaminacion_atmosferica_en_chile.pdf
    • http://zulesaxeririv.sportsontheweb.net/wanolononobisirimenisorat.pdf
    • http://monubaz.iblogger.org/birthday_calendar_templates_excel.pdf
    • http://lapitubemexidi.mywebcommunity.org/56723549143.pdf
    • https://faxomozux.weebly.com/uploads/1/3/0/7/130775398/lexesomapuvuse_vegodufixokod.pdf
    • http://tefituguj.iblogger.org/ryanair_aircraft_mechanic_salary_uk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4a1a9860-4b07-44d5-a092-970adc0d5862/firefox_43.0_1_download_32_bit_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/07e9e5aa-65c4-4d2d-a40a-a15596ca56fd/what_is_the_main_focus_of_biological_psychology.pdf
    • http://movuzog.rf.gd/sukoti.pdf
    • https://s3.amazonaws.com/verirejon/bokifonu.pdf
    • http://fimuwixuxur.rf.gd/32560493871.pdf
    • https://uploads.strikinglycdn.com/files/4b8395a9-db59-49ae-b702-3e4cf2940eaf/1989_ezgo_marathon_lift_kit.pdf
    • https://s3.amazonaws.com/sesijesule/pak_study_notes_for_ba_in_urdu.pdf
    • http://maguvunu.epizy.com/50299291348.pdf
    • https://s3.amazonaws.com/bibejovixapis/bluebook_citation_practice_guides.pdf
    • http://tapoloferazuziw.atwebpages.com/when_to_stop_using_angelcare_bath_seat.pdf
    • https://s3.amazonaws.com/girilifawuxi/nyc_subway_map_2018.pdf
    • http://surifuj.rf.gd/joronasabaludovukujej.pdf
    • http://gedugexem.epizy.com/how_to_day_trade_crypto_like_a_pro.pdf
    • https://uploads.strikinglycdn.com/files/2ed32b59-4cf0-42fc-814a-206877cca1c2/23461244477.pdf
    • http://tasowotata.epizy.com/86461049873.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f44e.bin
cc469c08e6c4ea9101a6fcc093bf41786e78c7754378722901c9b0ba74c106f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF44E 5184 bytes
font_01_sfnt_off000105ca.bin
766d3038a46f60ff1f2f3d7b1b1a7ca488ead56867b812308105444997f03945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105CA 10548 bytes
font_02_sfnt_off000129b5.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129B5 4324 bytes

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