Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddb5d56a4709ca8f…

MALICIOUS

PDF

72.9 KB Created: 2021-03-04 07:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: eb2dc41443574e3ec065ade95c22dad5 SHA-1: 82e1e99ce7780394b988d259ad24ebe71f8227fd SHA-256: ddb5d56a4709ca8ffc4335f7675b7ed7e0a46433c798716f6eb467ca1ac707e3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/award?keyword=logitech+s715i+battery+replacement PDF link annotation
    • http://goodshopsales.xyz/alphonsus_de_guimaraens_filho39hor.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/1996_mercury_9.9_4_stroke_manual.pdfIn PDF document text
    • http://dulugidi.iblogger.org/wolujofadeforavoxalimawob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_5fe8c313a6ffe.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/10250787710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445531/normal_600a577b315fb.pdfIn PDF document text
    • http://kujamemapevubu.mypressonline.com/93193020468.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/95638596508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5fd7be0bd1fd8.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/xoferuzu/army_of_two_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/cubase_5_recording_software.pdfIn PDF document text
    • http://megigezorozo.atwebpages.com/boy_scout_knot_tying_guide.pdfIn PDF document text
    • http://zekarevuwo.epizy.com/railway_empire_guide_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/73705423178.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/18133914709.pdfIn PDF document text
    • http://kefujuvaw.epizy.com/54700608405.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/mexaponiwikapubabu.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/cadena_alimenticia_como_esta_conformada.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_off0000dea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA0 5788 bytes
SHA-256: e89888fc00d0beba8337375bc4c9488b362c15bf908cb6dba7d23a76a6ef185a
font_01_sfnt_off0000f245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF245 10500 bytes
SHA-256: 05d249c07ea4824dedc402c2f7943256a34a908207d12c9564047401786644bd