Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a56724870a66d8e…

MALICIOUS

PDF

81.1 KB Created: 2021-03-06 08:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: b5a7e7a7f92504b73ae12f767831e29d SHA-1: 1feae200fe8368c313e76adc6663c53daec85ede SHA-256: 3a56724870a66d8e24eafdef45c136e8a3df3a419b2c481eb216574a6e2f5af0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick users into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful resource.

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://nipisod.ru/award?keyword=can+you+get+youtube+tv+on+roku+streaming+stick+plus PDF link annotation
    • http://getcreditcheck.info/sururifewuzexigafitfwx.pdfIn PDF document text
    • http://pubggaming.online/674929463962jj2l.pdfIn PDF document text
    • http://silver35.ru/avast_secureline_vpn_for_androidz616a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388619/normal_5fe0de1956b4c.pdfIn PDF document text
    • http://takotonefajale.22web.org/bafabati.pdfIn PDF document text
    • http://xuforaxi.22web.org/cmfas_2a_study_guide.pdfIn PDF document text
    • http://nikecortez.net/united_states_army_stock_photoswz27k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388183/normal_5fdca69ac2041.pdfIn PDF document text
    • http://idclick.cash/bexelinor9oa7.pdfIn PDF document text
    • http://item-mask.top/white_rodgers_water_heater_error_codesqx5jx.pdfIn PDF document text
    • http://rastet-malysh.ru/diagnostico_de_enfermeria_en_trombosis_venosa_profunda6e6q5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/vidmate_free_app_old_version.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_81e273e54d794af085dab17a8dc0d524.pdf?index=trueIn PDF document text
    • http://puguvapalovuzub.rf.gd/leprechaun_hat_craft_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/chabot_college_performing_arts_center_events.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/tabetogexupav.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/xufodupefobeniratikob.pdfIn PDF document text
    • https://8c4778c4-ed17-4cf1-86f9-5448e21c5c15.filesusr.com/ugd/6da380_965ab21025f540548347126d349d0f59.pdf?index=trueIn PDF document text
    • https://5c1d027a-13d2-427a-a16f-987044955173.filesusr.com/ugd/1d3654_1ee63a69180c4e578cf42c9ccc92a6a2.pdf?index=trueIn PDF document text
    • http://zenisuxu.rf.gd/7-_11_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/aadhar_without_otp_and_totp.pdfIn PDF document text
    • https://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_3ce719b77d3a4952a51cf3b1396cb347.pdf?index=trueIn PDF document text
    • http://losoxapo.epizy.com/pelenapinuxuxivexigipef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BA 5524 bytes
SHA-256: 1dd5772b2c6095d78a6d2b8ea359664de7b4db4347870e7eae8665ca6f3acbd2
font_01_sfnt_off00010482.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10482 10476 bytes
SHA-256: 8366e7445977ca810f8181789c78c46f37f111ff31f9daec1fca21d8ee941a75
font_02_sfnt_off00012856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12856 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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