Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4a2d6e22307e4d0…

MALICIOUS

PDF

76.2 KB Created: 2021-03-09 19:32:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c0f5101656c7b7364493af14055b72bc SHA-1: 8b21a7be26695f86ac5b32b90efdee7a20b8d6e6 SHA-256: d4a2d6e22307e4d0c75f74f9634c145ee2dd86167b94a0d2b8eaa9213f4982e4
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Uc davis map parking' and a suspicious URL, suggesting a phishing lure. No scripts were extracted, but the presence of an external URI points to a potential redirection or download attempt.

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
  • 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://zajinet.ru/strik?utm_term=uc+davis+map+parking PDF link annotation
    • http://ralugugifoxatir.scienceontheweb.net/modeling_photosynthesis_and_cellular_respiration_worksheet_answer_key.pdfIn PDF document text
    • http://xomerisupudegop.medianewsonline.com/xudowawufefijadumowuja.pdfIn PDF document text
    • http://witaxolexigabi.mywebcommunity.org/nefuzesawalororodub.pdfIn PDF document text
    • https://cdn.sqhk.co/fovudadeweto/aNDgdjf/58393371797.pdfIn PDF document text
    • http://xojitufos.66ghz.com/michelin_guide_uk_2019_press_release.pdfIn PDF document text
    • https://cdn.sqhk.co/mixaluwekitu/diCjl3I/bafomamemekidamalibotone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vilolosukip.rf.gd/convict_conditioning_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/google_sheets_manychat.pdfIn PDF document text
    • http://zisubaripuxiba.epizy.com/muzozaxisejuwikili.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/formulas_and_nomenclature_binary_ionic_compounds_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/google_sheets_arrange_alphabetically.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/carrom_king_game_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56620f9-da65-48df-8fd9-3093ee7f48fd/the_stranger_harlan_coben_netflix_ending.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a178d615-1f27-44de-b978-e5249be55327/41723472589.pdfIn PDF document text
    • http://forezepolutaju.onlinewebshop.net/wowan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2324d9f2-4bb4-48c6-8c6a-2407e35fd6c9/derununilutularapozawe.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/anti_lock_braking_system_seminar.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/40888534474.pdfIn PDF document text
    • http://dazesokagevak.rf.gd/81643270878.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/dofetiwaw.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_off0000ea0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0B 5476 bytes
SHA-256: 0490ebefca96bfa9ce1444a842846b5faedacd16b8b51d7845c8214d4eee2334
font_01_sfnt_off0000fca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA2 11352 bytes
SHA-256: 41616cb9b83cde181f580e0f34d39987a45b3c5bc027e8515fbf70238f8a6cb3

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