Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb308430c69e8c3…

MALICIOUS

PDF

73.3 KB Created: 2021-02-07 18:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5ddce429ed9b5584a6fa1c168bfeb358 SHA-1: 10e35bcbff1ef53404ee9ba83d27192d76bddff6 SHA-256: ebb308430c69e8c383484ed739df5eb7f7d7a9a4d9c969245c0df62df146cbc0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wb?keyword=gate%20fold%20template%20microsoft%20word PDF link annotation
    • http://alternativeinfluencenetwork.net/epic_minecraft_logo_wallpaper_4kdirb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403407/normal_5ffa247ed4f59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412151/normal_5ff88f5d1d3f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392656/normal_5fcf6ea8911e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422134/normal_5feeb0406ed0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387586/normal_5fdcca4360caa.pdfIn PDF document text
    • http://discovljzg.fun/53205113855t5i45.pdfIn PDF document text
    • http://igme.site/risenuna941nl.pdfIn PDF document text
    • http://muluwusive.22web.org/gigifamukuxamebuzesa.pdfIn PDF document text
    • http://mini-cam-v2.club/427721978289fuze.pdfIn PDF document text
    • http://copyrights-notices-helps.com/kungfu_fight_movies1o9nd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600f906f55533.pdfIn PDF document text
    • https://dubebonu.weebly.com/uploads/1/3/0/8/130874554/serewuvorowizu.pdfIn PDF document text
    • http://yourcy.com/81840905340g1h48.pdfIn PDF document text
    • https://pulakaxumif.weebly.com/uploads/1/3/0/7/130776647/8301943.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikezixivuvuda.rf.gd/29359339770.pdfIn PDF document text
    • http://sesisat.epizy.com/3883960802.pdfIn PDF document text
    • http://xexobazetozi.epizy.com/37215575135.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_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 5424 bytes
SHA-256: e1793a761c7055f63fc8e37a2df46ec01d6a347e00365d80bca2630d49d8f9d6
font_01_sfnt_off0000f50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50D 10240 bytes
SHA-256: f77882fb3a97c3faf5e892bdd998ddca52fcd775a3e7942b965d29b2e3642b19

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