Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe8881e7c1f4081c…

MALICIOUS

PDF

70.6 KB Created: 2021-03-04 18:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eccac8a9f5e87fb9ada2efea879fd1ba SHA-1: 6070ce073c5aa9e89af3a3a60836b580ad8fc362 SHA-256: fe8881e7c1f4081c01cbd6abd3b7f3f06d5fd4651177f32e21dbab3b06a91b7e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/award?keyword=words+that+start+with+zee PDF link annotation
    • https://cdn.sqhk.co/gufezitaxato/Agigj1V/fox_deportes_schedule_pacific_time.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426816/normal_6003026775878.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/wufizuweveto.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/does_delta_sonic_do_inspections.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/2005_nissan_pathfinder_starter_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/FgjsHEU/ulysse_speedometer_pro_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453098/normal_60350aaf3b02b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457847/normal_5fce34c4c877b.pdfIn PDF document text
    • http://paselon.getenjoyment.net/visoxubogusaruxugugeno.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/CigmcjF/81723958863.pdfIn PDF document text
    • https://cdn.sqhk.co/sowotewope/bgcIF5G/79835947492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418570/normal_6017ad9b64ce8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379720/normal_6018bd4992c1f.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/mizeteb/suspicious_package_what_to_do_uk.pdfIn PDF document text
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_f9f86f3d920d44ea9e300bacdc47062c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fexuror/national_dengue_guidelines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/calcutta_high_court_recruitment_application_form.pdfIn PDF document text
    • https://76bf09fe-c378-4d6f-baa9-beaf48595a8b.filesusr.com/ugd/61567a_6b70ada604a148ce9ce6a55fed2f3582.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mokamoba/pujazarosupazivoxinasotiv.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/44987262382.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/56510225021.pdfIn PDF document text
    • https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_725ee04a62a248838e4839d69d814afd.pdf?index=trueIn PDF document text
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_55f3a0311ea1405dae2e9ccf1cf2363c.pdf?index=trueIn 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_off0000d8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E6 5036 bytes
SHA-256: b9d7fb795de62433d2c1cfdaf5bb9f3936caf49ce266640d5b3717a06567af11
font_01_sfnt_off0000ea1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1D 10264 bytes
SHA-256: d188e0328e50ed3507539d27b23c5b87c1fb7f9eaad664772a6f8feed093b758

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