Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85ce192a19699f8…

MALICIOUS

PDF

73.5 KB Created: 2021-02-28 09:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5791a7679e0ce6db9fc1d27be3d88e9e SHA-1: 4539ce423c37abc18736731e8d1a0c9457237740 SHA-256: b85ce192a19699f895726b1ab76b83a5fecb30b5157a9acf77b7ad89394f56a0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xajibur.ru/strik?utm_term=lattice+energy+of+kcl%2528s%2529 PDF link annotation
    • https://cdn.sqhk.co/nagigureti/iaibjfo/38706591429.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/instructions_for_positive_covid_test.pdfIn PDF document text
    • https://cdn.sqhk.co/jimikafede/3mKjfha/tokaido_matsuri_expansion_review.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/acer_aspire_e15_windows_10_installieren.pdfIn PDF document text
    • http://libralab.digital/is_50_shades_of_grey_a_good_bookdk420.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/39304799251.pdfIn PDF document text
    • https://cdn.sqhk.co/lunexubafexo/hEiPFjd/30906234019.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/drgcia7/6317581678.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/ggjfhfc/my_walmart_schedule_apple.pdfIn PDF document text
    • http://remastacer.com/18364343678dadzm.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/qhbzNFA/mupofitifenepefofag.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/my_side_of_the_mountain_movie_free.pdfIn PDF document text
    • http://fufejezonodim.mywebcommunity.org/dokaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rabelinowizufe.myartsonline.com/libro_los_nuevos_profesionales_del_siglo_xxi.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/66645505249.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/30663448089.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/how_to_open_downloaded_in_kindle_app.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/will_losing_weight_make_my_head_look_bigger.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_off0000de0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0E 5308 bytes
SHA-256: 8c9562f853d6bfc74097badc164ff8f4c2dc5a8c5e40cffcf74ed93a8b456061
font_01_sfnt_off0000f051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF051 12476 bytes
SHA-256: ad364dfd82c2f1bada0a28a03cf9819ba67abb5442263e69fd2174bef8cc43b2