Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ebd42faee39aeb…

MALICIOUS

PDF

68.7 KB Created: 2021-02-08 14:11:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3113a7fa140433537be47b0cffea7537 SHA-1: 20e2609a8580e17bf8b211d5be831497380efa2f SHA-256: b6ebd42faee39aebc08ab3bcb81efdc457cad33e281d76774f1f37657e836f22
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wb?keyword=personal%20branding%20101%20pdf In PDF document text
    • https://kakituku.weebly.com/uploads/1/3/4/5/134589995/pidofolab-zijifeduzaf.pdfIn PDF document text
    • https://livurexile.weebly.com/uploads/1/3/2/6/132695833/4134669.pdfIn PDF document text
    • https://pabidiwamudobav.weebly.com/uploads/1/3/5/2/135299897/1397167.pdfIn PDF document text
    • https://bununijadepijag.weebly.com/uploads/1/3/5/2/135298825/pabunami_viruremosixeve_wavasukurax_kibasirutota.pdfIn PDF document text
    • https://cdn.sqhk.co/pogezasamu/hcgiieL/94239205690.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448548/normal_6002d65f0796d.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/EibjfyN/best_ifttt_applets_2018.pdfIn PDF document text
    • http://remazage.22web.org/60695432292.pdfIn PDF document text
    • https://penomagara.weebly.com/uploads/1/3/2/6/132695387/dafagifud_vomajasa_gekasilamuni.pdfIn PDF document text
    • https://rebumazezip.weebly.com/uploads/1/3/4/8/134860465/277b9e60d41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://relaweki.rf.gd/american_truck_simulator_bus_mods.pdfIn PDF document text
    • http://mebolunene.rf.gd/buckingham_palace_tour_guide.pdfIn PDF document text
    • http://pidawuz.epizy.com/57568267419.pdfIn PDF document text
    • http://siberasule.rf.gd/63863969754.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/kurtzpel_bringer_of_chaos_apk.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_off0000ccb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB1 5544 bytes
SHA-256: d8616c844514294f604e3a69dff38670fa29200131b5a4ca8f966ef92a369fdc
font_01_sfnt_off0000df97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF97 11600 bytes
SHA-256: cd6b0167a3bf5f571e7c44a4f2f2a040019af29c85c1db15f73867cbe81480fa