Malicious PDF — malware analysis report

Static analysis result for SHA-256 e241ff3be8976769…

MALICIOUS

PDF

75.2 KB Created: 2021-02-27 00:41:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aa433af78dd9ad8fc2e04a0930d71d89 SHA-1: b1461b43c61c6673b8748e91443fdfe03375feb9 SHA-256: e241ff3be89767697fc5da47cd420fa5bc6afd02f4831efb073b2b7bd9d7eaea
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/award?keyword=what+natural+juices+to+lose+weight PDF link annotation
    • http://smartline58.ru/cartoon_character_drawing_tutorialuxyxd.pdfIn PDF document text
    • https://depasosuva.weebly.com/uploads/1/3/4/4/134483816/govifuviwefemusisa.pdfIn PDF document text
    • https://cdn.sqhk.co/rugugojeba/hfjjikB/mekudaka.pdfIn PDF document text
    • https://cdn.sqhk.co/remigalakefo/jfjg3cH/21769045278.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/eIgjhhW/mom_pregnant_newborn_baby_care_hospital.pdfIn PDF document text
    • https://tubolapibakosi.weebly.com/uploads/1/3/4/8/134872187/9f2023486756.pdfIn PDF document text
    • http://phtech.site/trane_wifi_thermostat_installation_manualozl49.pdfIn PDF document text
    • https://cdn.sqhk.co/kibedutej/jcttiil/world_bricklaying_championships_2019.pdfIn PDF document text
    • http://securespot.ru/animal_coloring_sheets_for_preschoolers2xnzr.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/BgdWhgj/duckduckgo_privacy_browser_mod_apk.pdfIn PDF document text
    • http://tryraisins.pro/how_much_hp_does_a_lamborghini_gallardo_haveav58e.pdfIn PDF document text
    • http://chelobaka.space/example_of_experimental_research_design_in_nursingyhvqw.pdfIn PDF document text
    • https://cdn.sqhk.co/vixemujomu/wicMjc6/meribakibifem.pdfIn PDF document text
    • http://kernig.pro/fatinoxfp5.pdfIn PDF document text
    • https://kafiwixuvaso.weebly.com/uploads/1/3/0/8/130874495/2205478.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_off0000eaca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACA 5240 bytes
SHA-256: 8e657b97f2ef1e6724aec7aabde58d7c5ed53cedcafdd4e23950b16cb939f350
font_01_sfnt_off0000fcb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB5 10240 bytes
SHA-256: 7177c341aec0095846ee4b69a0f0fd6f480bb05330c08937fe496937707e78e8