Malicious PDF — malware analysis report

Static analysis result for SHA-256 509356c36418097c…

MALICIOUS

PDF

68.5 KB Created: 2021-01-07 12:11:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: dab5306193976d42824b542daacfc6b2 SHA-1: 343fd8470e9d6d2509e1cc64bc56bfd17580236b SHA-256: 509356c36418097cf669c51964456dfa1c7f5aca6eee9c427b7c52dc7c631492
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://traffmen.ru/shook?utm_term=origami+lucky+star+paper+strips+size In PDF document text
    • https://cdn.sqhk.co/gefimiwotux/jhib6gh/hello_kitty_cafe_las_vegas_location.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/jeJFgiD/14630719769.pdfIn PDF document text
    • https://cdn.sqhk.co/disegivoji/jiPNLr1/lodewalujebunumivu.pdfIn PDF document text
    • https://cdn.sqhk.co/xawuboma/5jDlggJ/kisovubomumivet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471988/normal_5fd2687c37c96.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvomuvugu/eWKgcjc/91695246504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_5fadbccb5275b.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/aha0Y1D/kugipakokivele.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/nejejgM/maserati_levante_color_rame.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/WiRjicB/gavadosipow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_5fd5f5346a324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417214/normal_5fd081d76024a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450635/normal_5fdf49b33b364.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d88cf91-a43b-44a6-8465-b39b2ae63aed/dobawokavaloduriba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12990d0b-e6a7-48a1-9347-a972cc351ea3/wowadagoniniwolipepid.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_off0000ced0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED0 5496 bytes
SHA-256: 578bbd14d06ed1be9d33b668f564756432b90d17c68c0aef3b7bea4630e9d29d
font_01_sfnt_off0000e17e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17E 10492 bytes
SHA-256: bca2a237e564a0df556a934e5f1b0e91ba42d5d16236b2b89e74f8e9bb1ac14c