Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f667b50bba06d0…

MALICIOUS

PDF

76.7 KB Created: 2021-02-08 15:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 461af8e277e9143931afb297f8937e55 SHA-1: 11d6e7d99a74d56eb6783591a678ee2f417b61ae SHA-256: 14f667b50bba06d074a86da0aff2006b097387a3c69715d6ce5005f4889ed87a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=administration%20of%20criminal%20justice%20law%202011%20pdf PDF link annotation
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/6816527.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387919/normal_5fcae13376f21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448547/normal_600561811c0dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382429/normal_5fca12008f331.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408595/normal_5ffcdd6358ac4.pdfIn PDF document text
    • https://tesiligozi.weebly.com/uploads/1/3/1/4/131407846/1121304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460476/normal_600cb5c817e24.pdfIn PDF document text
    • https://reravojune.weebly.com/uploads/1/3/1/4/131406269/289483.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/jbxXMd7/girl_scout_superhero_coloring_pages.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497344/normal_5fcaa8edb025d.pdfIn PDF document text
    • https://wotuterivakevom.weebly.com/uploads/1/3/4/6/134608936/zanosepukubapigutar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_6010acfe2bcc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496585/normal_601eabafc29bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421780/normal_5fe55f3ab7306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474169/normal_5ffe072a2aabf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_600d326a19273.pdfIn PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/254eb011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483587/normal_5ff3d2278231a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF33 5784 bytes
SHA-256: 9cf1f7dfcf04c6d163c99786a1b90c60a84607ada76baca6ba4c85ff6df5568a
font_01_sfnt_off000102ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EC 10084 bytes
SHA-256: e0bdedc5d52d52bd76e67c1b53172620bb5aa8da351366b55fa67c974efa64b4

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