Malicious PDF — malware analysis report

Static analysis result for SHA-256 cefb1c6441e82227…

MALICIOUS

PDF

79.4 KB Created: 2021-03-30 04:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1df5e679b69a93517f9f49c0b511b71b SHA-1: 50939a55f2a096b0d8b721c0ae9ddc16f220338b SHA-256: cefb1c6441e82227dc99ef88d568addd98d3e7a3a652dbf544e150f910b4bac3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/wix?keyword=cloudland+high+school+graduation PDF link annotation
    • http://pumorux.medianewsonline.com/core_muscles_exercises_for_beginners.pdfIn PDF document text
    • http://nakodinita.scienceontheweb.net/gagitujivulit.pdfIn PDF document text
    • https://bexopugizabon.weebly.com/uploads/1/3/4/0/134042324/zawiwojiwimuxulip.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/77779519545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_600e44db8d7c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467003/normal_601a3b7fb6b3c.pdfIn PDF document text
    • https://dimafivatoputir.weebly.com/uploads/1/3/4/4/134496040/wuzesebagujabu-xububorabo-zuzukijezuzapel.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/diwalodovafimililuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_602ad3ffe34d3.pdfIn PDF document text
    • https://dezazobe.weebly.com/uploads/1/3/4/7/134755526/880064.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/mors_kochanski_survival_scarf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416504/normal_5ffe11207386d.pdfIn PDF document text
    • http://konalofasu.mywebcommunity.org/pumozedulasavovavijej.pdfIn PDF document text
    • http://memaberenux.scienceontheweb.net/convertir_un_documento_en_ingles_a_espaol.pdfIn PDF document text
    • https://bofakodejo.weebly.com/uploads/1/3/4/2/134265658/potunake_depixadebuvipa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxifiv.myartsonline.com/the_secret_life_of_pets_2_characters_in_real_life.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/androidx_support_library.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/jokokuzag.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/wimpy_kid_movie_diary_the_next_chapter.pdfIn PDF document text
    • http://tipatanakuke.onlinewebshop.net/badminton_footwork_techniques.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/van_der_waals_constants_for_three_different_gases_are_given.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/warrior_diet_or_omad.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/why_is_there_no_hot_water_coming_out_of_my_faucet.pdfIn PDF document text
    • http://zasuwunal.myartsonline.com/otite_externe_aigue.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/xesim.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_off0000ece8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE8 3220 bytes
SHA-256: 6811ece83e10f30fbb458a9fef57313d55ca2ea223ba3d079ba9f9f67612aea4
font_01_sfnt_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 5104 bytes
SHA-256: 01da82aa7d9aeea985ee91d7b2143844279bed8a8ed60a4e30b673ca6483df9e
font_02_sfnt_off000109be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109BE 11212 bytes
SHA-256: d2c77430735a88f16eb5f108afd804b1f86ba425ac86f2a9c299d814523e128f

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