Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc41aeb0c80656b4…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 01:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 15e01f44af6843cc71fec16d8dfded81 SHA-1: 372f355a55ab415b064f35229242c2aa757b1eb7 SHA-256: bc41aeb0c80656b46516fbf707c969f72fd070a3f33ea2835df4d52830ae2cb0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/aws?utm_term=importancia+de+las+certificaciones+de+calidad+pdf PDF link annotation
    • https://sakenudawajaka.weebly.com/uploads/1/3/4/5/134595508/reviw.pdfIn PDF document text
    • https://munulokepopat.weebly.com/uploads/1/3/5/2/135297381/fulanuz_muvuvovena_sapereguduvixut_ratabadopat.pdfIn PDF document text
    • http://tasuzafu.22web.org/mahalaxmi_calendar_oct_2019_marathi.pdfIn PDF document text
    • http://bluetea.space/warrior_notes_tv_subscribe9wevx.pdfIn PDF document text
    • http://ladidoxa.iblogger.org/ti_template_powerpoint_2010_p.pdfIn PDF document text
    • http://ponoxavar.iblogger.org/class_11th_ncert_chemistry_book.pdfIn PDF document text
    • http://rufejupewanun.iblogger.org/bitter_moon_1992.pdfIn PDF document text
    • http://hookup153.site/zefatyi69p.pdfIn PDF document text
    • http://govnosiakxws.online/93782272839rqzf6.pdfIn PDF document text
    • https://cdn.sqhk.co/komilede/zkK9jiU/sawum.pdfIn PDF document text
    • http://jewlgems.com/bookman_jf_pro_fontz5d37.pdfIn PDF document text
    • https://ravuluzezufex.weebly.com/uploads/1/3/5/9/135956854/9bc766103a5176d.pdfIn PDF document text
    • http://xteenware.online/kienyeji_poultry_farming_manuali9fyk.pdfIn PDF document text
    • https://webenewosa.weebly.com/uploads/1/3/1/4/131409170/wujakepevofodu_wukuxuxomoxop_mabiramit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibixobijowib.rf.gd/63249797689.pdfIn PDF document text
    • http://vafukibugaf.epizy.com/71807661768.pdfIn PDF document text
    • http://xawezukazekexi.epizy.com/heraldic_beast_crossword_answer.pdfIn PDF document text
    • http://nibewisule.epizy.com/99929239585.pdfIn PDF document text
    • https://www.larepublica.coIn 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_off0000cfcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCC 5236 bytes
SHA-256: 8fa4bd6ff984c473c6211de8c5574cf294f3d0b2c41e4117757aafcaf78a7961
font_01_sfnt_off0000e17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17B 11928 bytes
SHA-256: 25a8ca1842a3b0fbb5105fe33315e56b4c8f561c8c39a25aa4e180c9ddf266a1