Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7199fe935d36db9…

MALICIOUS

PDF

76.8 KB Created: 2021-03-02 15:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 24c3d897d835b61e123e75442e181424 SHA-1: c7d50c9a007f5d5337b7f9127bb45085dfd8d9c0 SHA-256: d7199fe935d36db9d9650e92e5ccd4636b9f32256acc7be073969bad6ec62f03
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URL that redirects to a site offering a download, likely a lure for users searching for 'English grammar pdf in sinhala'. While no scripts were explicitly extracted, the PDF structure and the presence of external links suggest it's designed to lead the user to a malicious download or phishing page.

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://kuzutuzo.ru/award?keyword=english+grammar+pdf+in+sinhala PDF link annotation
    • http://pigigozoruda.mypressonline.com/triangle_congruence_worksheet_answer_key_page_1.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/20497063345.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/vampire_diaries_cast_season_3_episode_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498882/normal_603a85bfa949d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409238/normal_603ba657a120a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467004/normal_603e250fc3dd6.pdfIn PDF document text
    • http://zedukibawubige.22web.org/61099064212.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408702/normal_5fc9bbe5f3cca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413575/normal_60210d054b2ce.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/mupukesunobaga/blank_search_warrant_template_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/vefebanirivax.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/genozarar.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/harbor_breeze_ceiling_fan_remote_wall_control_uc9050t.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/customs_declaration_form_philippines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/lebekebibolunugaxojemada.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/lundin_mining_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/52322377442.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
    • http://sinhala.sourceforge.net/In PDF document text
    • http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITSIn PDF document text
    • http://www.gnu.org/licenses/gpl-2.0.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24B 5412 bytes
SHA-256: 999da2b8752f766f8b600c66839e347ed89fa5338c4cc983fe971e1cf69754e9
font_01_sfnt_off0000f44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44B 3840 bytes
SHA-256: 5b8e8035f8940535bfb5f3d78de7d5c45dbc51c905faa5d9788b8fc152e96872
font_02_sfnt_off0001025c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1025C 10948 bytes
SHA-256: ca0568f227433ae0efdd90cbd1dee4d15c11a6730822b35fb7fd29b844e0ec97

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