Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa5a248f1067e954…

MALICIOUS

PDF

70.2 KB Created: 2021-02-23 03:26:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0be87e464251b5185b46dacce1ef26c7 SHA-1: 77c265c7bbe6d10afd73aa91eb27aaaff0ca25d7 SHA-256: aa5a248f1067e95497c5e71c370b11563d0e62911b802bb005cf4bb882d19bb2
136 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
  • 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://seumenha.ru/wb?keyword=craftsman%203-tool%20air%20compressor%20combo%20kit PDF link annotation
    • https://cdn.sqhk.co/kolokejo/jjUuIhi/rocket_launch_space_race_2._0.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/idhgqgj/19771303923.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/Ahenlgh/gibokutogozebabiniziti.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/QkNggUr/mitabutajaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/xivijela/cO1vjrA/divamom.pdfIn PDF document text
    • https://cdn.sqhk.co/wujejelot/bhjhjgh/segen_solar_zimbabwe.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/2jjhjhB/susupedujeguxukagokiri.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/iihghig/fojodutopekedowis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491155/normal_5ff7741f4e69d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465387/normal_602d5d2f47ad0.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/2aIihh7/gekuwi.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/icHv8np/29481377599.pdfIn PDF document text
    • https://cdn.sqhk.co/karopepagu/fHjchTA/ritut.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/dygf7OX/cheat_code_twisted_metal_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_5fd9b3c1db56e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D5 5464 bytes
SHA-256: 5169990c221459dc3a5d8f901de43e80ca37c85b55d49f1023b78e9fe5ce4690
font_01_sfnt_off0000e858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE858 10356 bytes
SHA-256: 99870a1929d81d1cf8b6167b0e890fcc2a54b063927a14aba03929976d15bddf