Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9fe46d3388d8a2…

MALICIOUS

PDF

76.9 KB Created: 2021-01-27 06:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c3df582fce69cf8c562a8beaa18a620a SHA-1: e2e92bedd82038d9966f69aba367a6bdfa4155f4 SHA-256: 1b9fe46d3388d8a2ba10aec4966eb72e0eb3e8aa5ac31f0a684cbcff85dc7fbb
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=django+limit+queryset+in+template In PDF document text
    • https://cdn.sqhk.co/wadusazilox/jbhb2ib/business_management_online_classes_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/djiUhi0/windows_server_2019_remote_desktop_services_licensing.pdfIn PDF document text
    • https://cdn.sqhk.co/sujutowupolu/3hbA5gi/32431557496.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/Bd0Siig/mekeza.pdfIn PDF document text
    • https://cdn.sqhk.co/tijinujul/5rbR2mB/winking_lizard_beachwood_reviews.pdfIn PDF document text
    • http://cleaner360.shop/83954390393hzer3.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/ieiaWjf/beholder_indy_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/ropulufira/jif90kI/vamagawebudixagidudepolo.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/fNscgiE/sulivaroxo.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/godewumazek/20902941765.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/65111731608.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/54311737119.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/eternal_palace_mythic_raid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/anpanman_bts_wapka.pdfIn PDF document text
    • http://dugipiwem.epizy.com/19068525859.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_off0000e9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 5444 bytes
SHA-256: a275345b4d13d9e1d5baedbba8f36151a2275571e09c9accf59140da461fa5c7
font_01_sfnt_off0000fc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7C 13068 bytes
SHA-256: 5b5a30884b2a8ee127d9300abb8e6e03ca18ff7e3d47deb109de1ea130670714