Malicious PDF — malware analysis report

Static analysis result for SHA-256 33219b6fb0aa0ccc…

MALICIOUS

PDF

70.6 KB Created: 2021-02-27 23:15:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4e2bcbf23ebafdd870b2bfd3b905ee9e SHA-1: 02209fa30d47401b2203ac9572cd8bafa951987b SHA-256: 33219b6fb0aa0ccc8eedd39be76cc6a55eb7e62158f5e34189a872f6a610499c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=how+to+read+someone%2527s+body+language+pdf PDF link annotation
    • https://dolojimopa.weebly.com/uploads/1/3/4/8/134887070/kujolilasuku.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/fHyhjzS/pokemon_quest_recipes_legendary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412584/normal_600014519a655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_603096c3237d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468536/normal_5fcdfe41181ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420776/normal_60385f4972d6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454682/normal_5fcf2e7fd61e3.pdfIn PDF document text
    • https://cdn.sqhk.co/demexadol/bpjbbgZ/new_fashion_hair_color_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_601f7a5ead5a7.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/f9c18ed2eb0ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5ff54bf5da6e5.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/c0ojeNp/48010640478.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/sivanira/bible_by_king_james.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_off0000d47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47E 5688 bytes
SHA-256: c795a4c914ddad4ad12f99596a426a9569941cdfb40f3bd75fe50cffdf661684
font_01_sfnt_off0000e7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DE 11016 bytes
SHA-256: d7b74c91973c9a00edc2882a43d2a67c7e43b68965db6c9b5d098fb7e41f574f