Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f708d1bde70928a…

MALICIOUS

PDF

69.5 KB Created: 2021-02-04 15:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1f0db007faf5523d5974a671b2308a6a SHA-1: 319389d958704026f0d27e548ae51dab43d60fbe SHA-256: 4f708d1bde70928ab97596d2e44f98983ade7137a053fd96949f72a2c53df9d5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=plasma+balls+near+me PDF link annotation
    • https://cdn.sqhk.co/ketalidukepi/a1ijJje/wormate._io_videos_2019.pdfIn PDF document text
    • http://1green.space/17757648998hjmp8.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/fFghggd/leraguwobonuzemebubewixi.pdfIn PDF document text
    • http://coolstudent.space/masotilolopejosupikodigd3qe0.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/gjqMLic/56535864071.pdfIn PDF document text
    • http://springital.fun/restaurantes_modo_tasty_diners_20181sb1y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_5fea201c8ecd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416927/normal_5fcb6a167c55e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485442/normal_6018a25045258.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/rozebofukixus/96007295310.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/sovezomunovoligi.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/bujakenoli.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/xalenigora.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/html_to_converter_python.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/duxunibemarikazuzejaduk.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_off0000d49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49A 4972 bytes
SHA-256: 44892f321f2fe5e7231f83bec20df03a3634c98feb615c8f23577a473fa89c5e
font_01_sfnt_off0000e566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE566 10540 bytes
SHA-256: e71e7117376a0984cb9a710344dbfba3a4c7a5bb6b89380a44e4ab2f7604664a