Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93d4d3d97fbda89…

MALICIOUS

PDF

69.2 KB Created: 2021-02-23 04:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae6b85ae1a4977d85f97e9c7dd5ef463 SHA-1: 1cb9bdc6fb30343f4cb5c076e7ff69378cbf1a74 SHA-256: c93d4d3d97fbda8990dfa418b83fc0aec189c6334b7b4d229f9e775c743f2ab0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=life+fitness+x3+elliptical+manual In PDF document text
    • http://flylovel.com/hp_probook_4530s_cmos_battery_replacementvc9u4.pdfIn PDF document text
    • https://cdn.sqhk.co/xisapabo/jgeiajf/age_of_z_origins_level_16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446147/normal_6030277371858.pdfIn PDF document text
    • http://basvuruizleme.online/do_marketing_managers_make_a_lot_of_moneymwstm.pdfIn PDF document text
    • http://pribor-poverka.site/lubisuvap9yis.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/bW8gdig/business_administration_accounting_degree_online.pdfIn PDF document text
    • http://jizawilezi.22web.org/69284425803.pdfIn PDF document text
    • http://zusetuwegu.22web.org/jozixesawowoda.pdfIn PDF document text
    • http://world-wildshop.com/kufebisuwajosaul5gm.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/piwanisaj/movie_critique_paper_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/37632189493.pdfIn PDF document text
    • http://kokutofir.rf.gd/42852768492.pdfIn PDF document text
    • http://wixilapawatos.epizy.com/plural_possessive_nouns_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/peter_pan_pantomime_script.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/xonaxanagukivikos.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/41254701463.pdfIn PDF document text
    • http://birabigipo.epizy.com/52204686534.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/detroit_pistons_injury_report_update.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_off0000d0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DE 5236 bytes
SHA-256: ae3a992e79213c5ed5b0037c6da15e548396edd49e521358d5826432f4f6d16b
font_01_sfnt_off0000e2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AD 10940 bytes
SHA-256: 1a146ff78025ce01095977f434c4cb0aa9c674eaaa6c876cf989ac42754a814b

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