Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbcb495fdd8784c9…

MALICIOUS

PDF

73.5 KB Created: 2021-01-20 06:24:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e645ff3a218c8a8784570d5455dbe721 SHA-1: 91a249d1c5ca3549622058f947c3a692d7bbe225 SHA-256: dbcb495fdd8784c96cd22b33b3090be28f892399feec77a27c6d8937248c666f
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://traffine.ru/wb?keyword=foster%20parent%20appreciation%20month%20ideas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f8fc56f1c3a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f88b20d23154.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hbkjijc/goalie_hockey_bags_with_wheels_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493201/normal_5fff72fcc7577.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366032/normal_5fcfed541121c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_5fe63bdb6b87d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443329/normal_5ffc5958c4cf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5fa86840cc0ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fb4c55e0f5cc.pdfIn PDF document text
    • http://bimiwefumukiv.22web.org/35637324868.pdfIn PDF document text
    • https://cdn.sqhk.co/dunokufimove/kwkibcO/pokemon_eevee_wallpaper_for_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_5fa03f86b2ea0.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/jfjbihc/kopoduwitobebiga.pdfIn PDF document text
    • https://site-1178022.mozfiles.com/files/1178022/40k_mathhammer_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8d6f18a7656.pdfIn PDF document text
    • https://cdn.sqhk.co/xiroxozalal/igdxgjh/75708065537.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riwexakax.epizy.com/fezotogozegudafiwujesit.pdfIn PDF document text
    • http://tuzugewidided.rf.gd/architecture_competition_brief.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_off0000e350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE350 5236 bytes
SHA-256: 2c8519f3ba6b122fa4490d3b0aef2f0f58c91b45fd56e50d1e1d71540cba6710
font_01_sfnt_off0000f4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F2 10636 bytes
SHA-256: 8f06544c6683a56d1b403447e1d00714a027d9fea07ba4436020476bee4ad436

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