Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a51b680d9cb0c6c…

MALICIOUS

PDF

76.2 KB Created: 2021-03-01 10:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: efef81f85b742995399d5227caf704d4 SHA-1: 16827d4a1788420ae64076f61da115158602948e SHA-256: 7a51b680d9cb0c6c4c1768ca11ae386f5eccb25e360d717fec77fb9b7220842c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lozipotod.ru/strik?utm_term=significado+de+la+palabra+sabiduria+en+la+biblia PDF link annotation
    • http://anrostore.ru/feriforifitijofotipnsg32.pdfIn PDF document text
    • http://bottlechainworld.com/caliper_test_visual_analogy_answers_for_homeworkb6twm.pdfIn PDF document text
    • https://vaputonusodi.weebly.com/uploads/1/3/4/4/134493057/xutofofev.pdfIn PDF document text
    • http://tizorudaredan.iblogger.org/rozuzesalobatugivevasata.pdfIn PDF document text
    • http://thecabinets.xyz/bepiludanetejonowedok56vp.pdfIn PDF document text
    • http://sewenosafi.22web.org/spreadsheet_templates_for_landlords.pdfIn PDF document text
    • http://tersq.space/horror_amino_downloadqoifw.pdfIn PDF document text
    • http://golulim.iblogger.org/nijarelodavovubesaga.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/98dc9f031.pdfIn PDF document text
    • http://dekabizutetan.22web.org/happy_birthday_song_in_korean_video.pdfIn PDF document text
    • http://vawafaxas.iblogger.org/subed.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/mejip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fubusomarixemuw.rf.gd/82392641265.pdfIn PDF document text
    • http://pasazaxara.rf.gd/career_path_cooking.pdfIn PDF document text
    • http://nawevuf.epizy.com/apple_iphone_5_facebook.pdfIn PDF document text
    • http://wefazerigibu.epizy.com/photo_me_chasma_lagane_wala_apps.pdfIn PDF document text
    • http://xiwezolemamu.rf.gd/46081069194.pdfIn PDF document text
    • http://vopepogam.rf.gd/how_much_can_you_make_with_real_estate_license.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_off0000e888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE888 5568 bytes
SHA-256: 9bc816c9a035973a2fcb0b4eb423fc9c7563b25ffe4b44c4250b994e12e42dd4
font_01_sfnt_off0000fb88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB88 11784 bytes
SHA-256: f9443bde04f8b3da93f8014ea7bfc279b7eb935d64e2d9cd0f4b323b0c1e809d