Malicious PDF — malware analysis report

Static analysis result for SHA-256 464d850447676396…

MALICIOUS

PDF

70.5 KB Created: 2021-03-04 05:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f362c9cdcd74872f9a16d883455fec31 SHA-1: b53543e831eb6fd241c2b1dd124434cfcc65086e SHA-256: 464d850447676396bdcabd9de938df0e39a39cedcb3b585d7b3c454f2328238a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://nipisod.ru/award?keyword=air+force+academy+football+score+today PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401545/normal_602936fd16af8.pdfIn PDF document text
    • http://ridegibulas.22web.org/xinegusulidomipulul.pdfIn PDF document text
    • http://nibajafij.medianewsonline.com/nelson_stud_welding_n4s_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fedfc89a0d47.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/finite_element_analysis_theory_and_application_with_ansys.pdfIn PDF document text
    • http://zexawil.22web.org/stony_brook_medicine_email_format.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489402/normal_5ff5d53ab0876.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sejakopa/dexeti.pdfIn PDF document text
    • http://depupumuda.rf.gd/is_9000_rupees_a_lot_of_money_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/que_es_el_calvinismo.pdfIn PDF document text
    • http://nedomawof.rf.gd/bollywood_movie_hd_mkv.pdfIn PDF document text
    • http://gukojubare.rf.gd/pepafuroxosakunugeza.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/fagefovirefageza.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/how_to_balance_a_stacked_washer_and_dryer.pdfIn PDF document text
    • http://gazosaka.epizy.com/ciclo_de_krebs_cuando_ocurre.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_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 5400 bytes
SHA-256: a170e3f7df4b12437b06367413935dfa9a6124265ee9e7d9efa2c166d1d93112
font_01_sfnt_off0000ebd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD4 9836 bytes
SHA-256: e840c7206988f5fcc19ffb5ab9ab383381ea752cee361d9ae46bc6bc30fb8738