Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ec58d628139c0c…

MALICIOUS

PDF

69.1 KB Created: 2021-02-18 19:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 633e76a32a9234ecf59ab529700a8571 SHA-1: ef16fbb6495235a23735b40fb9af6475cf4d48c4 SHA-256: 54ec58d628139c0cbcb1d853204b2210f4f88a93052f60a817434798141153e9
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=how+to+connect+vizio+tv+to+dish+network In PDF document text
    • https://cdn.sqhk.co/dudugetogi/jb0idif/eye_candy_rotten_tomatoes.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/jgLyiaQ/75037517131.pdfIn PDF document text
    • https://cdn.sqhk.co/wesegagage/g6iifMt/forex_trading_strategies_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454303/normal_602390aaf31a0.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/ihgcijD/midipixonux.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/hgc6jgg/sims_4_cc_bandana_hair.pdfIn PDF document text
    • http://kitigaw.22web.org/bhoothnath_movie_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/davusegeb/Rajdh9x/ponuxufibavuzulazopiki.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikapoxev.epizy.com/pan_card_nsdl_correction_form_2018.pdfIn PDF document text
    • http://posazexemonepen.rf.gd/aviwest_streamhub_manual.pdfIn PDF document text
    • http://tapavakagazu.epizy.com/children_s_day_images_and_quotes.pdfIn PDF document text
    • http://zuxulabawiba.rf.gd/asperger_syndrome_diagnostic_scale.pdfIn PDF document text
    • http://zozadugaweguj.epizy.com/application_form_for_loan_sample.pdfIn PDF document text
    • http://kobebosafuraw.rf.gd/esc_guidelines_atrial_fibrillation_2010.pdfIn PDF document text
    • http://gokozir.rf.gd/xixubowe.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_off0000d145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD145 5012 bytes
SHA-256: 3fcd9e76f07986c28d738c6d2f93ed2e3377c571690e5d889b47555ccaee58ed
font_01_sfnt_off0000e26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26C 10784 bytes
SHA-256: 14b3def9db01993d2517cb82c680d057a36db2b9bc08354cb3a6a1c61ec695bc