Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b77e9d2891fc8f…

MALICIOUS

PDF

77.3 KB Created: 2021-02-05 11:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 498228eafa8e766e690e4f2c7cfa6805 SHA-1: 08fa62785be420058ddd5d889aa95c7afd75d344 SHA-256: d7b77e9d2891fc8fa8078d5c145ad00ee1f0714474bf649906efc02cc8b1cc68
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/aws?utm_term=bonus+application+format PDF link annotation
    • https://tepidupelagoxu.weebly.com/uploads/1/3/4/4/134472529/vepurebibakemu.pdfIn PDF document text
    • http://rejuxipo.iblogger.org/vesosuvuwefavixibakarik.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/fjcSiYu/jijeretoranox.pdfIn PDF document text
    • https://fibetenozogu.weebly.com/uploads/1/3/0/8/130813768/4454881.pdfIn PDF document text
    • http://pusokum.66ghz.com/information_on_the_rock_band_queen.pdfIn PDF document text
    • http://plusstore.pro/like_a_boss_meaningbmlcw.pdfIn PDF document text
    • https://cdn.sqhk.co/gezefesete/AXB7gjE/snake_simulator_games.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/Mgfzf79/utopia_definition_english.pdfIn PDF document text
    • http://tumbochka.space/wumeje4vw5n.pdfIn PDF document text
    • https://cdn.sqhk.co/jifonakilux/X5qzt8M/t_mobile_store_menlo_park_mall.pdfIn PDF document text
    • http://indital.space/48738171080olcaj.pdfIn PDF document text
    • https://nupanirosum.weebly.com/uploads/1/3/4/8/134858368/junojaxezekok_voxem_kotetixodan_falibasutegepib.pdfIn PDF document text
    • http://euromarket.pro/cobol_cics_tutorial2dwu4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kixixiwibatogit.epizy.com/bee_gees_too_much_heaven_lyrics.pdfIn PDF document text
    • http://jubadoloje.epizy.com/takemureburikipas.pdfIn PDF document text
    • http://xupudajiwozov.epizy.com/50441902756.pdfIn PDF document text
    • http://pekotezubefem.rf.gd/storeonce_vsa_deployment_and_configuration_guide.pdfIn PDF document text
    • http://mibozoviken.epizy.com/blank_picture_frame_template.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_off0000f22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 5212 bytes
SHA-256: 67e9c67cb61530bd21393229798401334b78ae46482b4a18b37201350dc88d2e
font_01_sfnt_off000103d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D3 10756 bytes
SHA-256: dbdc0efbd8b5c4e2b19946bbe92861a4c31425486d902d27c109d6fdfde1b2ba