Malicious PDF — malware analysis report

Static analysis result for SHA-256 f836170656c8b0e0…

MALICIOUS

PDF

67.2 KB Created: 2021-02-18 00:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ddd49146526e5f74dd2be7d7663aa214 SHA-1: c27a914707e7dc75286529368cf7eb80d41d144d SHA-256: f836170656c8b0e0e1d8f48b729b804b657ce0b19389d0a34840adf1b7273267
126 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
  • 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://leonvi.ru/strik?utm_term=public+administration+jobs+new+jersey PDF link annotation
    • https://cdn.sqhk.co/ruvonusebex/jfja3hh/sujaxegena.pdfIn PDF document text
    • http://mmeueue.space/pexolipavidevovafud9260x.pdfIn PDF document text
    • https://zazobowelukoki.weebly.com/uploads/1/3/0/9/130969428/7352801.pdfIn PDF document text
    • http://bititoxoguxal.22web.org/28592440104.pdfIn PDF document text
    • https://tabekemaw.weebly.com/uploads/1/3/0/8/130874329/tukeputurum.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/iagjjgi/ball_alien_game.pdfIn PDF document text
    • http://svoydvalend.xyz/bulunu9p6oc.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/misebisafizofasuma.pdfIn PDF document text
    • http://vuxokiwi.22web.org/wordly_wise_book_5_lesson_11_answers.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/benubapopikaj/60228348178.pdfIn PDF document text
    • http://fopekexu.epizy.com/allama_iqbal_open_university_date_sheet_fa.pdfIn PDF document text
    • http://nafebuxu.epizy.com/new_english_movies_2018_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/latest_formal_letter_format_in_english.pdfIn PDF document text
    • http://kekosasokab.epizy.com/is_enthalpy_change_of_formation_exothermic_or_endothermic.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/kaxiwafasile.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_off0000c888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC888 5496 bytes
SHA-256: f54576da0c7a5eb8c2f78725002989bbf1eb39b33160bf3ef45404740879ebf6
font_01_sfnt_off0000db34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB34 10812 bytes
SHA-256: 503c4c5f3e61466f83f73c1b8fa32e45effd4ab6457a2fe2a42db92fc88a212d