Malicious PDF — malware analysis report

Static analysis result for SHA-256 091e3442c1d50a60…

MALICIOUS

PDF

74.6 KB Created: 2021-01-19 11:00:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1e084e1a69260bf736176902ead0d397 SHA-1: 2b78d669a034e2d2ae457ff123eeb87d7ffd669b SHA-256: 091e3442c1d50a601a31721027e5909b6ca5f16f13978edd82c0f88982ff8a4e
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://seumenha.ru/wb?keyword=jogo%20super%20hero%20squad%20tower%20defense PDF link annotation
    • https://fodexugamo.weebly.com/uploads/1/3/4/8/134851562/25ca4eeb8866d3.pdfIn PDF document text
    • https://sajefabavasa.weebly.com/uploads/1/3/2/7/132710755/cd1f1c00388.pdfIn PDF document text
    • https://site-1176481.mozfiles.com/files/1176481/744571080.pdfIn PDF document text
    • https://site-1259926.mozfiles.com/files/1259926/i_am_all_yours_english_song.pdfIn PDF document text
    • https://posuxosovovenev.weebly.com/uploads/1/3/4/5/134593520/rixugara.pdfIn PDF document text
    • https://site-1171628.mozfiles.com/files/1171628/football_championship_subdivision_playoffs.pdfIn PDF document text
    • https://kerutefabiwemek.weebly.com/uploads/1/3/0/8/130874269/962bbf.pdfIn PDF document text
    • https://xoravali.weebly.com/uploads/1/3/0/7/130775395/rebimupesoluvatibixi.pdfIn PDF document text
    • https://xoxatujetila.weebly.com/uploads/1/3/0/7/130775098/ruwibogofekezifak.pdfIn PDF document text
    • http://xefakuwejufo.iblogger.org/retofoluzupe.pdfIn PDF document text
    • http://wavasesinile.22web.org/m_c_b_c_full_form.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/af3d723e1d.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/gczD0ge/the_island_survival_challenge_descargar.pdfIn PDF document text
    • https://titenukom.weebly.com/uploads/1/3/4/5/134523185/marajem_mebogifu_pozidabu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lopejad.epizy.com/88491541725.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_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 5480 bytes
SHA-256: 08f12206384adac4586bd409f0b74fff5d15ba2275f96c97fd41d579f165272e
font_01_sfnt_off0000f635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF635 12256 bytes
SHA-256: eef52ed9bc2174d3bacb8c523958ee45dbfc037977cdba2d8218e4b990bdee5f