Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf904d5f75045bf9…

MALICIOUS

PDF

75.7 KB Created: 2021-02-28 03:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a3c4c2ee0d2d581f76c629e85d366c28 SHA-1: b34de432fe8f5f38d5de1a24b16afbca8bd13c9e SHA-256: bf904d5f75045bf92e834e0bec04d0ac9f1afa954dcad29b074e3f7ea057b60e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://soxebez.ru/123?utm_term=frases+de+cazadores+de+sombras+los+origenes+angel+mecanico PDF link annotation
    • http://kesuvajeb.scienceontheweb.net/gofelivifagebuxi.pdfIn PDF document text
    • http://nukowivoxom.iblogger.org/skype_for_windows_10_filehippo.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/38296842186.pdfIn PDF document text
    • https://likemopulijufo.weebly.com/uploads/1/3/0/7/130739197/02df0ab5.pdfIn PDF document text
    • http://buledumemo.iblogger.org/afficher_les_formules_excel_raccourci.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/vupigezotitewapaziwisugu.pdfIn PDF document text
    • http://jafalule.22web.org/performance_appraisal_comments_productivity_of_work.pdfIn PDF document text
    • https://maparezoja.weebly.com/uploads/1/3/5/3/135321508/88d89d9b8.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/remeranexe/lafarge_hydrated_lime_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/10_page_research_paper_outline_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/moment_format_current_timezone.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/49842065872.pdfIn PDF document text
    • http://xupevovegizem.rf.gd/71880307798.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/illuminating_imagery_classic_student_worksheet_answers.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/tilixarow.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/startup_costs_sheet.pdfIn PDF document text
    • http://vufigenetusanu.epizy.com/ultrasound-_guided_stellate_ganglion_block.pdfIn PDF document text
    • http://niwanabumupe.epizy.com/rafogogeligonesozifibal.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_off0000e95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95B 5404 bytes
SHA-256: fae488a6f79e3e261eb5606f7792a6e34674d6b1e0da173bb59c97c25a22207f
font_01_sfnt_off0000fba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA8 11704 bytes
SHA-256: ff6fd7e5ed606b1db2fce9224eefbbdc2d8fcf6d14e01d9a4631255d716c24a0