Malicious PDF — malware analysis report

Static analysis result for SHA-256 a27d97b9acc0cc5d…

MALICIOUS

PDF

64.7 KB Created: 2021-02-24 06:18:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a1f1eb9d5d711ecd41d89e3e945dc840 SHA-1: 7217a5e16f7df1a799d9b4a7aa695d2d7ffe97a9 SHA-256: a27d97b9acc0cc5d420355992b5d11a87cb89ebd82ef22769adb975e15c8bce4
136 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
  • 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://leonvi.ru/aws?utm_term=kenmore+progressive+vacuum+hepa+filter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448121/normal_5fdc856211edd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379471/normal_5ff073c37449e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501233/normal_5fcfb7b875cd2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482872/normal_5fcc82f429700.pdfIn PDF document text
    • http://raifaisentapp.online/jizadedetolovazaacgfx.pdfIn PDF document text
    • http://ag-management.space/light_domain_cleric_guide07fct.pdfIn PDF document text
    • http://creditactive.info/vegetable_recipes_for_turkey_dinnerfd3tl.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/hm8gfcK/7927471002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5ff96c54cc66c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magoravir.epizy.com/comparing_fractions_worksheet_ks2.pdfIn PDF document text
    • http://wexewowi.rf.gd/natinetesejipam.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/sezak.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/audio_biblical_pronunciation_guide.pdfIn PDF document text
    • http://tugojan.rf.gd/jerir.pdfIn PDF document text
    • http://rejosunugewojif.epizy.com/18211115544.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_off0000c066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC066 5456 bytes
SHA-256: b89405adc4f6531ab2323adaf6bc1a3c140b3446c2328482a235c53c93490e1a
font_01_sfnt_off0000d2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E0 10740 bytes
SHA-256: 1b9af95492fa00db55751c8ed8f4b0cc0278a1a222f1eefa31248af2e21506bf