Malicious PDF — malware analysis report

Static analysis result for SHA-256 166cf5508a028175…

MALICIOUS

PDF

98.9 KB Created: 2021-03-20 01:30:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0723739a2ffd8b57e5788dd1c05e9c7f SHA-1: ea1e47f6c1ba7d10be925b5989fab0c956eba418 SHA-256: 166cf5508a028175fcc8947241afc70714f2ae14f1ef50adb1bccb3510513402
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9990

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://dugedepap.ru/strik?utm_term=honda+gx340+repair+manual PDF link annotation
    • https://jasefukop.weebly.com/uploads/1/3/0/7/130776564/diliwamagor_wufuderelugep_wipiwi.pdfIn PDF document text
    • http://hotel-engels.ru/78315593274ndku4.pdfIn PDF document text
    • http://karaulovlife.site/wovezapevuduxevek6cm2t.pdfIn PDF document text
    • http://metalllift.ru/pakeguxabomewu2h7hb.pdfIn PDF document text
    • http://xepuxupipe.mywebcommunity.org/59487269747.pdfIn PDF document text
    • http://reduslim-ordina.site/9844866208v53jq.pdfIn PDF document text
    • https://cdn.sqhk.co/bupedamarib/elLWTij/online_html_compiler_gdb.pdfIn PDF document text
    • https://cdn.sqhk.co/lirebirab/ujbyijY/viking_sun_world_cruise_itinerary_2020.pdfIn PDF document text
    • https://kuxifegofemiza.weebly.com/uploads/1/3/4/8/134865321/zuratavixalakek_lizuzogeramaguw_xibep.pdfIn PDF document text
    • http://lassituda.online/ssa-1099_taxable_amounttkogu.pdfIn PDF document text
    • https://cdn.sqhk.co/xelajuwodaf/gjUjijb/rumble_fish_sushi_scotts_valley.pdfIn PDF document text
    • https://vameduxa.weebly.com/uploads/1/3/4/6/134664578/difejiz.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/dPYawxn/10119282746.pdfIn PDF document text
    • http://characduwe.space/timeline_diagram_template_wordec5xl.pdfIn PDF document text
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/xefavigujenilikupug.pdfIn PDF document text
    • http://usmileofficial.site/8061479756807a30.pdfIn PDF document text
    • http://sevastopol.sale/70381912666elc5y.pdfIn PDF document text
    • http://tonerinkstore.com/weather_report_hattian_bala_ajko49v8.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/0c8adb8cba4ff.pdfIn PDF document text
    • http://medemukiduba.sportsontheweb.net/vanutig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxolavomuzo.myartsonline.com/ajcc_thyroid_cancer_staging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00434c8b-f4b5-4d5d-8da7-a0fa0db25e1b/innovators_dilemma_google_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01bc37cd-4481-4ede-8b51-0963bd331eda/tesosad.pdfIn PDF document text
    • http://wavexijazibivat.myartsonline.com/nekek.pdfIn PDF document text
    • http://wenibeliso.atwebpages.com/ccna_2_download.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_off00014529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14529 5524 bytes
SHA-256: 8999f826f0c63385efd83cca86d11be00877d92ecbb71c5f449b8e23e505683f
font_01_sfnt_off000157e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157E7 11272 bytes
SHA-256: e34132dde9015dfdaa9d8052e30327c328cc5adc7a23c4ce18e25c429ac5b296

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