Malicious PDF — malware analysis report

Static analysis result for SHA-256 05775957a91f09eb…

MALICIOUS

PDF

77.5 KB Created: 2021-03-16 13:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c07f79e0e2b45c48b5a8289eab505b25 SHA-1: c17fdf2466150abecc3e49715d6651c20f258a07 SHA-256: 05775957a91f09eb8c7caf1e7b1462a2616d9b254208eb25055577cf03b652fe
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing numerous external links, with a critical heuristic identifying it as a PDF link farm. One of the primary URLs, 'https://xezojetit.ru/wix?keyword=printing+press+renaissance+and+reformation', and another linked PDF, 'http://zijixiteluwek.scienceontheweb.net/biosensors_market.pdf', are flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=printing+press+renaissance+and+reformation PDF link annotation
    • http://zijixiteluwek.scienceontheweb.net/biosensors_market.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/woneketelak/apc_smart_ups_3000_tower_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e11f583-3ef6-4c02-b162-5d39e3f61835/20547832296.pdfIn PDF document text
    • https://892f65a8-8709-4275-9103-f26c144a9f7c.filesusr.com/ugd/4cd51e_2d9af709049c4c8093e776832bdfbebe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/akinator_apk_full_espaol.pdfIn PDF document text
    • https://dd907c4b-492b-4b4d-bf3c-9f0b7a2bd2c7.filesusr.com/ugd/96a426_a2f455fd85774dc6825967c680520adb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/c_programming_language_2nd_edition_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab34600b-c75d-4965-bcca-10acab9de646/zitesuvidesanato.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/43294043273.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/74783352504.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/schindler_s_list_movie_in_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/formulas_de_area_y_volumen_de_cuerpos_redondos.pdfIn PDF document text
    • http://limufij.myartsonline.com/6390750384.pdfIn PDF document text
    • https://11627308-8c8f-4f08-99ed-0ad85160907d.filesusr.com/ugd/682d1c_93346d57075349ef9b96cb2aa3eded4c.pdf?index=trueIn PDF document text
    • https://69df74eb-9f83-488d-97bb-abb55063df61.filesusr.com/ugd/f34323_6bf52e0d9ef4452ca37827ec3abbdc41.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/titugome/what_is_the_number_69_mean_spiritually.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/china_flag_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/business_analytics_degree_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/japanese_adjectives_list.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/kgb_archiver_pc_setup.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_off0000f0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F8 5444 bytes
SHA-256: a606bbaca20d9d73086ceaf73c09d5dfae6982f053cadd8fd4ed6d8b64b7e454
font_01_sfnt_off0001036b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036B 10984 bytes
SHA-256: 0107bc092e9d1b2d921aecdbacf5def369f23d7829d8074bebc3e9725ca9f40c

Open this report in the interactive analyzer, or submit your own file for analysis.