Malicious PDF — malware analysis report

Static analysis result for SHA-256 411e57d9908489fc…

MALICIOUS

PDF

67.3 KB Created: 2021-03-03 02:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f9e00bab44b2270118533dc13f491c19 SHA-1: 8350e70edfc0f1c55fdc2c3aa5e8966d0139a7d0 SHA-256: 411e57d9908489fc93956ddd35da07e599373913738fa0717e1e18da87aed22c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The document body, though heavily obfuscated, contains text related to resetting a Kenmore washer, suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+to+reset+a+kenmore+washer+series+700 In PDF document text
    • https://cdn.sqhk.co/sabiwizi/bgdgjic/trick_shots_dude_perfect_basketball.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409107/normal_602c65c2958bc.pdfIn PDF document text
    • https://cdn.sqhk.co/susojareb/jAWI7hc/how_to_get_shiny_zigzagoon_pokemon_go.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/wVhaogj/29608593582.pdfIn PDF document text
    • https://cdn.sqhk.co/sadoburola/Tqhb6Im/tejozamefopebupirow.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/ZihQdhb/68697987483.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/Wjiiehh/mukti_camp_offline_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xederebat/jeCDnUi/t_mobile_visual_voicemail_not_working_android.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/x7hbAYY/9547566842.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451575/normal_60322628426d5.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/jiNhhdu/to_the_moon_and_back_book.pdfIn PDF document text
    • https://cdn.sqhk.co/foradimotiri/Eic3if2/23557693286.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/ggflehg/fujunawavijufa.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/paropabaru/counterparty_credit_risk_wiley.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/angular_admin_template_themeforest.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/classic_wow_class_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/bihari_sala_aankh_mare_mp4_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/66805602920.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_off0000cc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2D 5232 bytes
SHA-256: aff52d114b906e29cc32ac6a4e6bd0a62c98d10a6e833be3ce62973beb14563c
font_01_sfnt_off0000dde2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE2 10020 bytes
SHA-256: 5793bc41afa1928394fc30aeed9a2f1dc76b58dde3018f8973092e1aef5b373f

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