Malicious PDF — malware analysis report

Static analysis result for SHA-256 4455e8e93816240a…

MALICIOUS

PDF

95.5 KB Created: 2021-02-21 23:51:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: e68644a9ca060153c8f5a886b90f3edc SHA-1: 8f89bbfdcab6201a889d7f48e946fdf2cc37703d SHA-256: 4455e8e93816240ae55a22c9df3deb36c157e0cd7e8b5e90df73f93e40494fec
194 Risk Score

Malware Insights

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

The PDF contains links to known malicious redirectors, specifically designed to lure users with search terms like 'Samsung wall mount'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site.

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://yafferge.ru/wb?keyword=samsung%20un55h6350%20wall%20mount In PDF document text
    • http://detonic-deutschland.website/stickman_dash_ios3b6g6.pdfIn PDF document text
    • http://devicesprotectionforusers.site/what_does_midnight_mean_spirituallyqrlff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416326/normal_5fe5f204e35c5.pdfIn PDF document text
    • http://espaceclient-cmb.com/what_is_shared_knowledge_tokeir8q.pdfIn PDF document text
    • http://topsale.pro/when_was_the_bible_written_timelinevanw6.pdfIn PDF document text
    • http://springwin.space/plain_city_weatherkmkh2.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/juvulexikujafegixiguk2ppyz.pdfIn PDF document text
    • http://wildboost.club/7648483741820jw0.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/zebarufuridorur/excel_advanced_filter_copy_to_another_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/barcode_maker_5._5_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/tokyo_guidelines_cholangitis.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/73127478133.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/annual_family_budget_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/pagiref.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/audio_christian_messages.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_off00013593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13593 5780 bytes
SHA-256: e1432c3ebef412d676b650d1789adcd5baf4643df840313599e33b07f9e0818a
font_01_sfnt_off00014929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14929 11828 bytes
SHA-256: 5ce82bc8366312330472a03145310a275f064ecb988b28af25bce35e6ce19960

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