Malicious PDF — malware analysis report

Static analysis result for SHA-256 c35d7e868f7549de…

MALICIOUS

PDF

73.1 KB Created: 2021-04-10 05:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c6cf72edbe4fa78ff892a5f6ed494250 SHA-1: 29a4d6121694224801ca84c5a56d30cb8b8c5def SHA-256: c35d7e868f7549ded3057d54ae9a56fc7afcc61d55c2ef15f831149ab7a3a5a8
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to printer ink replacement.

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://dugedepap.ru/strik?utm_term=canon+mg2200+ink+replacement PDF link annotation
    • http://lnstagaram-verifiedbadges-from.com/roruvinunajemusidilebi7y81.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/3Hgemgf/uefa_world_cup_2022_groups.pdfIn PDF document text
    • http://swiss-gear.store/105355487678t0kq.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/daurala_weather_reports6fbrj.pdfIn PDF document text
    • http://moresukko.ru/prentice_hall_physical_science_concepts_in_action_textbookc5qh5.pdfIn PDF document text
    • https://cdn.sqhk.co/liwifetil/viak3hj/91079687069.pdfIn PDF document text
    • http://beamorem.com/luwedipijafi7648t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/54769e2b-6bce-4417-8aeb-6c628ac43c63/14954729770.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/71045018089.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/vowepofokij.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/cursive_practice_worksheets_for_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc77adf6-19e2-472b-a57a-44d17cb37850/what_volume_do_you_listen_to_music_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/37158793803.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/48256745961.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/pibutonojojalaz.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/36732568587.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/atencion_alternante.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/technical_report_writing_example_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b2cd57-53d2-4ebe-9376-37bd119f6a9b/basic_french_words_and_their_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b203729-9425-4259-b5c7-6e77dda0641f/what_does_the_house_in_the_house_of_usher_symbolize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/778de156-5868-40dd-864b-ef1ebdc255aa/what_is_clr_in_.net_and_how_it_works.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/adobe_after_effects_android_apk_free.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_off0000deee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEE 5316 bytes
SHA-256: 638e56e73afee0ae0289e4c191083f802f022bee9f194b86352e95c69d45d23b
font_01_sfnt_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 11204 bytes
SHA-256: d7fc243e04ffd14aca742a8fe48863a6ffa5ce72fa97f7ae8e3b12a0a312f8fe

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