Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1dcdead8697de3…

MALICIOUS

PDF

89.8 KB Created: 2021-03-07 15:39:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 317acfc860dfb6ac95e404445fe832a5 SHA-1: 50e8854e2007434ea3c295cdb0f315ccfb370809 SHA-256: ee1dcdead8697de3db167d0a9065dade6a29e307a563be00a79295c64930b562
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'kuzutuzo.ru', which is likely a phishing site designed to trick users. The PDF structure itself contains unusual elements, such as duplicate object bodies, further indicating malicious intent.

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://kuzutuzo.ru/wix?keyword=branded+tv+series+streaming PDF link annotation
    • https://cdn.sqhk.co/gufemazibafi/hercrRY/diy_hocus_pocus_book_purse.pdfIn PDF document text
    • http://sadogiropi.mypressonline.com/what_is_the_synopsis_of_romeo_and_juliet.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/YGGYiSH/lumofenudatebopupef.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/bz9lgcP/armageddon_gear_shooting_bags.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/ha3hcjb/remix_maker_app_free_download.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/at_what_temperature_is_fahrenheit_and_celsius_scale_the_same.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/rirusozo/fagatoxawudekekom.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/surah_yasin_dan_tahlil_lengkap.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_b7d3f8ccf53544a28a822e5232b2c016.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4000895-7efc-4b84-bae2-4c31bae8c5ea/percy_jackson_and_the_titans_curse_chapter_1.pdfIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_0eef5e49d1834765a12e002898d6abaa.pdf?index=trueIn PDF document text
    • http://fifalaviwa.rf.gd/integral_of_csc2_theta.pdfIn PDF document text
    • http://nudenagazosizav.epizy.com/jingle_bell_christmas_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/30714599398.pdfIn PDF document text
    • https://69c5641f-197a-42c1-bef1-daa502c1f1d7.filesusr.com/ugd/948cea_73fe4507239247758e03d75e5efee882.pdf?index=trueIn PDF document text
    • http://purewowesajumu.myartsonline.com/unicorn_magic_book_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da77e688-210f-4340-8778-469e8ef4a1f6/is_splat_bleach_good_for_your_hair.pdfIn PDF document text
    • http://jusaketij.rf.gd/game_audition_mobile_indonesia.pdfIn PDF document text
    • http://fanevisexika.epizy.com/14247648003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b739d20e-f948-4ecc-80cc-7fd6faa07a9f/how_to_connect_cricut_expression_2_to_computer.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/78102851032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17cea011-f119-4fd9-98d8-d971330a64a7/38257227486.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/71290855544.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/vurew.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_off000123bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123BB 5220 bytes
SHA-256: e266fe8cd22bbb97d9f08ad023abce2047ac3b95d9f81f87843cac09ae9448c2
font_01_sfnt_off00013572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13572 10600 bytes
SHA-256: 4351c7d229cc7e25d3fa0b289a9fe28347a35b868ed2b7a8cdf67f4cdf37526c

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