Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce38b9565dae6018…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 13:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 56aeee323b07cceefd5cb7f05ab0dad9 SHA-1: d750e310b4cbf66b32caad0d17c242035ec84700 SHA-256: ce38b9565dae6018e4170bdf7f9e50becb41104836686170e2749b00536b5694
194 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
  • 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/aws?utm_term=un+grito+desesperado+pdf+gratis+descargar In PDF document text
    • http://xuvivok.22web.org/printable_wheel_of_fortune_template.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/zhdhcjh/jolawofekateximo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5fe0f4043cda3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_6023e07d341bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391899/normal_6004b1c00b192.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/iiKhchi/ludo_neo_classic_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/hdifjfW/recette_digestive_biscuits_mcvities.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420917/normal_5fe3bc82c08a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389108/normal_6026054c74375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_60210d2bc0d80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504568/normal_5fe63e32091db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462714/normal_5ffc951051f39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367646/normal_6003cf162abbf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudufimapu.epizy.com/vubusesis.pdfIn PDF document text
    • http://voxibamad.epizy.com/brampton_weather_report_today.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_off0000dac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC3 5284 bytes
SHA-256: 2c4490cd909ce58e6ff3cf61e4d2b6a0af9576f0881377540986499694d608b1
font_01_sfnt_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 11684 bytes
SHA-256: 0ef94172aebf019ac9d413b3404754c9e7da17f34243bb823a9cbe9ba0d5b06e