Malicious PDF — malware analysis report

Static analysis result for SHA-256 68974564c3a94b5e…

MALICIOUS

PDF

70.6 KB Created: 2021-03-01 12:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fffbc96506cbe9b6d864d2adbd975077 SHA-1: b55ffc1f9bd9c7d457c80eb34a7b9bd3bb0a3c26 SHA-256: 68974564c3a94b5eb51eaf58ebac74d23e1ba0b0414a0f4f0b68bffb2aebb75b
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'jottigo.ru', which is likely the malicious destination. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure to trick users into visiting the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=beats%20pill%20colors PDF link annotation
    • http://matadidofedokod.22web.org/insinkerator_badger_900_review.pdfIn PDF document text
    • https://cdn.sqhk.co/nufopusifa/Qgdjjgf/influence_definition_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/iZKhiid/bass_boosted_car_music_mix_2019_mp3_download.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/why_did_winston_churchill_call_the_seven_years_war_the_first_world_war.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/kenmore_series_600_washer_wont_start_cycle.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/96944205142.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/loxopudizus/36520621387.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/how_to_deal_with_piriformis_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/81980053354.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/cho_gath_mid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/59179885432.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/request_for_leave_approval_format.pdfIn PDF document text
    • http://lijowavatajo.myartsonline.com/golds_gym_xrs_50_home_gym_with_high_and_low_pulley_system_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/49754324197.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/dozesadulijapovuxe.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/tetuxira.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_off0000d6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C2 4976 bytes
SHA-256: 80bf2ff90e47a0994cd48e6363b9a67223bdc3b81d8be22705d21e4a1a8b4657
font_01_sfnt_off0000e7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BD 11236 bytes
SHA-256: 0690fe7b41bfd0d5516b8b6d756bb1ae12d707cddc292a64131747fadf29f18c

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