Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a3c8dc8f64f3e5…

MALICIOUS

PDF

78.3 KB Created: 2021-02-28 22:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 7c40c39634c5f166526be9745b559f65 SHA-1: 60a600d610c55e3d58259941eb570d8e1959920f SHA-256: 07a3c8dc8f64f3e5b7c18994b43bcf6270bb3b34363661f69bbe2f90cb9b5f1a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-confidence heuristic firing for a redirector link, specifically designed to lure users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URL points to a redirector that ultimately leads to a PDF download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=how+to+replace+springs+on+lane+recliner PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5febb86cba852.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/9jfwuXO/7625278999.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459182/normal_6033c400510c0.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/warrior_of_the_light_book_summary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427273/normal_6035d519cf049.pdfIn PDF document text
    • https://cdn.sqhk.co/niwexifa/jggjdgf/vozerenupulolu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500893/normal_60384d7cd7670.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wiwuxot/gatijininovebugevuposa.pdfIn PDF document text
    • http://lisuronam.rf.gd/cuisinart_convection_bread_maker_cbk-200c_manual.pdfIn PDF document text
    • http://jofesowevelen.epizy.com/graphene_nanosheet_carbon_nanotube_polyaniline_composite.pdfIn PDF document text
    • http://dobifagamuwu.rf.gd/resume_template_free_ms_word.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/dark_souls_2_scholar_of_the_first_sin_strength_faith_build.pdfIn PDF document text
    • http://ravizovagusemav.epizy.com/78506664755.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/internet_speed_for_netflix.pdfIn PDF document text
    • http://woxanegerofokox.rf.gd/30979997038.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/vector_art_design_cdr_file_free.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00C 4944 bytes
SHA-256: c897da5dd1e9c1f7f44e30d3a23335a30efe5fa30fc905296c997db6565ff6ef
font_01_sfnt_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000f975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF975 10536 bytes
SHA-256: 1cd9334e49e9dffd360395f75752b85a3eb7731ef05ae0dbf823510558fd5403
font_03_sfnt_off00011d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D85 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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