Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c95dd2ef663c03…

MALICIOUS

PDF

78.9 KB Created: 2021-03-29 06:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 19d49eec4ccec8def95be73ff979f399 SHA-1: e75039da8e53b80c2c65e33c1cbb06fe98227d81 SHA-256: 45c95dd2ef663c03ec57f9b3f129f32ba651c1f1cc1a962f966eebd8337e7a71
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://lozipotod.ru/wix?keyword=2013+vw+golf+tdi+manual PDF link annotation
    • https://cdn.sqhk.co/xafiguzi/ijciiUN/police_officer_salary_miami_florida.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/2ILjihe/dolar.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/hfWTGie/33404445821.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/j0NXjgd/mad_skills_motocross_2_1000_attempts_cheat.pdfIn PDF document text
    • http://sijiwepi.mypressonline.com/matlab_2018a_download_linux.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxixixixi/Rgghhhd/free_birthday_invitation_card_templates_for_word.pdfIn PDF document text
    • https://cdn.sqhk.co/bumotinidopi/DK5iUih/jewimanenupalutonove.pdfIn PDF document text
    • https://cdn.sqhk.co/biposuba/d2ifijk/lobasanawajodogiwivagi.pdfIn PDF document text
    • https://cdn.sqhk.co/gikasiful/VIsumYV/6627340990.pdfIn PDF document text
    • http://xopaberowiwin.getenjoyment.net/sisedi.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/iihDIII/craigslist_maine_for_sale_boats.pdfIn PDF document text
    • http://fuguzelinufi.22web.org/the_boyfriend_book.pdfIn PDF document text
    • https://cdn.sqhk.co/rogolafu/jagi7gi/cotton_double_bedsheets_online.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/jaiaRGw/project_resource_management_tools.pdfIn PDF document text
    • http://xorabawik.medianewsonline.com/olivetti_lettera_32_manuale_italiano.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/zuniverijesud/apowersoft_video_full_mega.pdfIn PDF document text
    • http://bepolujogox.atwebpages.com/3738383195.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/am_i_a_single_member_llc.pdfIn PDF document text
    • http://mutidulofof.epizy.com/kuwegugumasiv.pdfIn PDF document text
    • http://kutoxinupuroxo.onlinewebshop.net/lina_khan_amazon_antitrust_paradox.pdfIn PDF document text
    • http://xonatude.epizy.com/anorak_magazine.pdfIn PDF document text
    • http://fezajeb.epizy.com/53724881833.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/chore_chart_printable_template.pdfIn PDF document text
    • http://guxedin.rf.gd/aladdin_filme_completo_dublado_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/40864128382.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/how_to_start_a_football_business.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_off0000f666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF666 5500 bytes
SHA-256: 0691853ef0565bf9fa72227841ee68bbce6913ae0d536f4e3e0db46a95fb8a48
font_01_sfnt_off0001092f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092F 10844 bytes
SHA-256: a1f4b94b262e3ee90858da39c9c46c09e7c37fe7581800583b88da3a03e29350

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