Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad25d5a4181b8b0…

MALICIOUS

PDF

70.7 KB Created: 2021-02-26 00:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9016f655dd3cc9491abcb781b7d73731 SHA-1: 2fb63c87d912796a78fab4271b042281dbb494bc SHA-256: 4ad25d5a4181b8b0c57af3057e2a239224c00b4704cbf5edd4a8784a4d16846d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/award?keyword=how+to+clean+bosch+ascenta+dishwasher PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375694/normal_6005e4bb6b018.pdfIn PDF document text
    • http://mopomelodow.iblogger.org/gramatica_a_present_tense_of_er_and_ir_verbs_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/buwaxaxodi/iijgPgf/91378725421.pdfIn PDF document text
    • http://tekirivira.iblogger.org/65579470026.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489412/normal_5fe98d27b36ea.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/how_to_get_philips_universal_remote_to_work.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/5Eibnf4/22093890013.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xowobovu.myartsonline.com/dekefilo.pdfIn PDF document text
    • http://nuxajirurus.epizy.com/fevovovaviferelaxawesufar.pdfIn PDF document text
    • http://lumuwejonalar.epizy.com/blood_pressure_measurement_guidelines_2019.pdfIn PDF document text
    • http://demumerip.rf.gd/matica_xid_8300_datasheet.pdfIn PDF document text
    • http://bigobawavelig.epizy.com/crime_reports_in_cancun_mexico.pdfIn PDF document text
    • http://wusutinewipus.epizy.com/sirudupomatel.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_off0000d8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BD 5220 bytes
SHA-256: 788969ca0609379c52c9801c8cb2fc359e4bad7cad389675b693c61610332ce1
font_01_sfnt_off0000ea7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7A 10476 bytes
SHA-256: d4fff8ef31fbf5aa5dcd021491c91ce75f0b6b99a2689d56e0f911e7f6e8c938