Malicious PDF — malware analysis report

Static analysis result for SHA-256 a224950f94bcd5f8…

MALICIOUS

PDF

71.0 KB Created: 2021-03-01 04:36:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5d8c187a3ac754fe273681e03385a3cd SHA-1: ce7b066f34d3e48d8ec38b70ac4d0f7c77b0e699 SHA-256: a224950f94bcd5f822485883e72d18677c8f5a9206447298ffef1f9863da3ee3
184 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.
  • 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://yafferge.ru/award?keyword=what+is+the+full+meaning+of+bodmas+in+mathematics In PDF document text
    • http://kamikofonem.mygamesonline.org/ejercicios_resueltos_de_trigonometria_1o_bachillerato_ciencias.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/how_to_reset_answering_machine_message.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/vilokofazajikaxifowok.pdfIn PDF document text
    • http://zumubexupon.22web.org/alodine_600_technical_data_sheet.pdfIn PDF document text
    • https://memezuwiz.weebly.com/uploads/1/3/4/7/134702577/kevetuzo.pdfIn PDF document text
    • http://resifulomate.iblogger.org/ledega.pdfIn PDF document text
    • http://gelivebun.22web.org/nererufivisusipepimuv.pdfIn PDF document text
    • http://mopexaxurip.getenjoyment.net/99503351644.pdfIn PDF document text
    • http://daposojur.iblogger.org/vibuzaxutakebige.pdfIn PDF document text
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/744bc084.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/fikuvine/38279184053.pdfIn PDF document text
    • http://xemunebo.atwebpages.com/how_to_learn_physics_on_your_own_reddit.pdfIn PDF document text
    • http://vinagakibozune.rf.gd/mufedo.pdfIn PDF document text
    • http://xoxasosopu.epizy.com/how_many_crossfire_books_are_there.pdfIn PDF document text
    • http://lugubukegi.epizy.com/54618951482.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/13960007068.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/samsung_2333hd_manuale_italiano.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_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 5492 bytes
SHA-256: 12026faf3af28d8fd98f125fed27d3d5be4a5f303ca89ca3c9d3f4505c4dca14
font_01_sfnt_off0000eb55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB55 10420 bytes
SHA-256: b518dc1c671388567e9c677962106050c1e16b349e4ce65e634b6f33435fb309