Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0b65f9929c296f…

MALICIOUS

PDF

67.4 KB Created: 2021-02-12 23:28:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4e8e41281ef898a26da089de63bbeca5 SHA-1: c8a49fff1220f8ea8631ab966964baa90267c421 SHA-256: 9f0b65f9929c296f808effdc81881814ba15e9f4eb329c9cbcf85dfbf3751ca9
136 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
  • 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://jacksth.ru/123?utm_term=calendario+escolar+miami+dade+2018+a+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fd66de6c5333.pdfIn PDF document text
    • http://megantv.site/university_of_miami_football_schedule_printabledyrzq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fc592251ecc3.pdfIn PDF document text
    • http://mybatut.store/dosijaduwenunebebijahdihb.pdfIn PDF document text
    • http://fesebenawasoz.iblogger.org/personal_weekly_budget_template_excel_2010.pdfIn PDF document text
    • http://tekirivira.iblogger.org/11648236566.pdfIn PDF document text
    • http://yozi.store/takugenokedatulgpnz.pdfIn PDF document text
    • http://presalle.xyz/xegalowubebatefeda0tsbk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruxomipeb.epizy.com/year_6_long_division_worksheets.pdfIn PDF document text
    • http://gagolugumetuvo.epizy.com/acrylic_mirror_sheet_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/network_signal_speed_booster_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/heartbeat_2016_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/benomolegojufezufafuv.pdfIn PDF document text
    • http://poserub.rf.gd/koteregezerisuribale.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/present_perfect_simple_exercises_with_answers.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_off0000ca6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6F 5664 bytes
SHA-256: c90a12fc0b7d6e0d9df3ddddf1c9286bf759740f8cd61412a8c8b04886d6d5e4
font_01_sfnt_off0000dd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD92 10360 bytes
SHA-256: 61fefc8e95dd5b04da432d5dac038a1c1ecadb4ef7b1788a2b2c1d9d8c794572