Malicious PDF — malware analysis report

Static analysis result for SHA-256 90ed6de63103a704…

MALICIOUS

PDF

72.7 KB Created: 2021-01-24 13:32:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3404731578a628e7df258adc7346aef4 SHA-1: 73eafb156bc62cd5bae757010d6d34463749f127 SHA-256: 90ed6de63103a7043a8f0f1e58f2c1dd566166540ae6cd29558c41bac303e61f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=drawing%20board%20online%20shopping PDF link annotation
    • http://itsamorem.com/jeximanapenogefozeblgzst.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/Thd6Ajg/fun_facts_about_halloween_1978.pdfIn PDF document text
    • http://riniwovefaraw.22web.org/48716317229.pdfIn PDF document text
    • http://fitness-ital.fun/idle_home_makeover_iosr5o52.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/ifuigXD/easy_rewards_app.pdfIn PDF document text
    • http://ighelpcenter.xyz/78611362889qzv5y.pdfIn PDF document text
    • http://prizinsta.site/885405914236c3fj.pdfIn PDF document text
    • https://cdn.sqhk.co/wixakulu/frKbjig/garden_luscious_strawberry_themes.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/gozilum/activesync_4._5_windows_10.pdfIn PDF document text
    • http://wonumamirevaz.rf.gd/judeme.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/dependent_clause_types.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/advance_birthday_wishes_pics.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/teflex_dehydrator_sheets_substitute.pdfIn PDF document text
    • http://juzefabamurever.rf.gd/implant_media_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/zarowusalidugitukewurur.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_off0000dea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA5 5452 bytes
SHA-256: cd87c957aac54a2f33b29dcdddcb134bda631e0e8f42127931efb8984270edb2
font_01_sfnt_off0000f136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF136 10732 bytes
SHA-256: a5364813a437b29144fe4b2027e0666ec6dbb2c72a15a195d7119936946f7767