Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3566e63e32ba445…

MALICIOUS

PDF

78.8 KB Created: 2021-03-10 12:59:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: b9f702f245aa02a27077f93ecb096bf9 SHA-1: 9bbf9537ef33c3aa4577cfbf0fb0928d6ffd0aea SHA-256: b3566e63e32ba44545e932649a5cba28ebd8cf427c42dc60c2275e0f61b08595
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/award?keyword=scientifically+proven+anti+aging+ingredients+pdf PDF link annotation
    • https://cdn.sqhk.co/perikowep/lhjJTja/lemalemu.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/ggjijgo/free_horror_movies_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/ifjd9vA/42800854978.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/jack_lalanne_power_juicer_instruction_manual.pdfIn PDF document text
    • https://vurifupilubat.weebly.com/uploads/1/3/4/4/134495287/favasokesurugepufa.pdfIn PDF document text
    • https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/97c3ae19c0b08e1.pdfIn PDF document text
    • https://cdn.sqhk.co/disidudi/Ajem3NG/taxisufe.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/aJZPXRu/kosemimumubejawime.pdfIn PDF document text
    • https://bujajegufo.weebly.com/uploads/1/3/4/1/134108800/9876198.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/how_to_use_logitech_wireless_keyboard_k400.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/introduction_to_time_series_using_stata_revised_edition.pdfIn PDF document text
    • https://peziwotikiju.weebly.com/uploads/1/3/4/6/134602895/zafapajuwe-motegoxugeg-zurexaxisov.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/tevomenil/pekizaka.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/12317613924.pdfIn PDF document text
    • http://luxajoja.epizy.com/funny_would_you_rather_questions_for_coworkers.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/netacad_chapter_11_exam_answers_5._0.pdfIn PDF document text
    • http://mojogoralil.onlinewebshop.net/garmin_forerunner_620_replacement_band.pdfIn PDF document text
    • http://segidamilezuv.epizy.com/lopemulofukodip.pdfIn PDF document text
    • http://wezinetukuxemim.rf.gd/physics_energy_worksheet_answer_key.pdfIn PDF document text
    • http://mebijido.rf.gd/aufklrung_impfung.pdfIn PDF document text
    • http://belibivizonojo.myartsonline.com/rivosojagijalezodejaduzi.pdfIn PDF document text
    • http://bidexegope.epizy.com/mozexogenuzada.pdfIn PDF document text
    • http://rolizixi.rf.gd/jikununemefakanijupozup.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/sodium_chloride_injection_safety_data_sheet.pdfIn PDF document text
    • http://tunufefenus.rf.gd/chamma_chamma_video_songs_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/bilutv_app_android.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B3 5588 bytes
SHA-256: 7cbd4af5cf4aeb870263a35d11b2ec2c1df4d1ce7070773db558f5399523685e
font_01_sfnt_off00010ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADE 10988 bytes
SHA-256: 987ae9d39a756b3005ce293782673485c7d0cc9b0a0426f0bd0b299f327cd30d

Open this report in the interactive analyzer, or submit your own file for analysis.