Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ec9386d0ab6191…

MALICIOUS

PDF

74.2 KB Created: 2021-02-12 11:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bc16daaeb8bb9c16e8352c9f8bef421c SHA-1: 65d1ba46f1836fdd478398796a77910690450843 SHA-256: 17ec9386d0ab619187ed2e7179fcd86c9d27627ce2832a133383b43a131782b6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/123?utm_term=acs+codes+private+pilot PDF link annotation
    • http://tefulen.iblogger.org/treatment_of_hospital_acquired_pneumonia_guidelines.pdfIn PDF document text
    • http://vuzopozakobepe.22web.org/sql_format_function_options.pdfIn PDF document text
    • http://gonugotez.22web.org/endangered_species_worksheets_for_grade_4.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/brother_movie_video_songs_hd.pdfIn PDF document text
    • https://zatitobeme.weebly.com/uploads/1/3/4/0/134097178/rosasosoxur.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/sokafimug-risorem.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/jigfhj3/vubipudolevotemal.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/89jihgm/reraz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://reruwok.rf.gd/chapter_21_hydrocarbons_worksheet_answers.pdfIn PDF document text
    • http://sexusig.rf.gd/bodhi_linux_legacy.pdfIn PDF document text
    • http://xetorofowuwid.epizy.com/nonprofit_executive_director_interview_questions_and_answers.pdfIn PDF document text
    • http://zabidogadifosis.rf.gd/99382805176.pdfIn PDF document text
    • http://tituxotal.epizy.com/spider_man_3_gameplay_android.pdfIn PDF document text
    • http://wupepiwora.rf.gd/subnet_calculator_free.pdfIn PDF document text
    • http://zofigofaka.epizy.com/canon_eos_rebel_t7i_instruction_manual.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_off0000e898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE898 5116 bytes
SHA-256: 9a0889fc05f1a4dc8590c8f7b327daa0c6da294e8f65de243b8ca69d97285b2b
font_01_sfnt_off0000fa14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA14 10100 bytes
SHA-256: a54e77ede77eebc9acc31959421b46c37619c3d7d9cf798dac0dc6d9885471dc