Malicious PDF — malware analysis report

Static analysis result for SHA-256 27760da4766fab7e…

MALICIOUS

PDF

72.2 KB Created: 2021-03-04 12:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7c6a0399db290ebe3c3e3ca6502f69ad SHA-1: 87e9fa74923bc4ad48763f96d3f5372a597b1daf SHA-256: 27760da4766fab7eae8665ad90784f247b09c52eab198d6ff5d68b402b73076a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/123?utm_term=does+a+gas+hot+water+heater+have+a+reset+button PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470228/normal_600af0d903348.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/77494561317.pdfIn PDF document text
    • http://petajofap.22web.org/multiplying_dividing_rational_expressions_worksheet_answers.pdfIn PDF document text
    • http://fajutixosisi.22web.org/86849734527.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/hejeja8/50558113808.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/vhesKhi/16147792220.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvivemu/fgj4zjs/smashy_road_2_new_mystery_cars.pdfIn PDF document text
    • https://cdn.sqhk.co/kilalovuge/jgjgUhi/wejejeparovobib.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/luxaduzimase/socialismo_vs_comunismo.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/epidural_analgesia_for_labor_and_delivery.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/hinterland_season_4_episode_guide.pdfIn PDF document text
    • http://xowatelowudok.rf.gd/what_are_the_7_principles_of_art_and_design.pdfIn PDF document text
    • http://xipakugamuweren.rf.gd/19998061374.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/test_de_inteligencia_emocional_on_line_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/69120430037.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_off0000dfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE6 5208 bytes
SHA-256: d8995e8af2331b591e9e1dae2890fda7c53706abb2cec2609f4de769e263074d
font_01_sfnt_off0000f1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B9 10060 bytes
SHA-256: 07a784beb2d2debed72de95f75b31a4f634c09ee4d923f409a2047e0fda64b50