Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63d2f203542283a…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 06:22:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 840ab0f8a5b21bd66ce7846b7572bfbe SHA-1: 374f480321dfbe6838c4f1e323b6685fe7c8d764 SHA-256: e63d2f203542283ac477bfcb919d1284b42c24cd142f642c29c9e5a007951b73
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://golowaki.ru/wix?keyword=the+police+in+america+an+introduction+9th+edition+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471081/normal_601d19a858eed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_60306d819f51a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452193/normal_5ff31de94d3d1.pdfIn PDF document text
    • https://taxajoberaruvu.weebly.com/uploads/1/3/4/3/134320235/togumodatirivil.pdfIn PDF document text
    • http://lifegirls.site/zulapabiwoximo4moi7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_60315afc2553a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450151/normal_5fce9de387944.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408462/normal_5fcfac1245d38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481162/normal_6021bb319f171.pdfIn PDF document text
    • https://vewevemeza.weebly.com/uploads/1/3/2/7/132741136/xemorobapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446492/normal_600d791b2500e.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/bisapovepizaj/nisov.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/armonicos_de_triple_frecuencia_en_transformadores.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_off0000e1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CB 5324 bytes
SHA-256: 29e497e96ae4f903d28d3b4086df6633c41bbbcc3f48bcdf26d3e721e78f17d4
font_01_sfnt_off0000f3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BD 10224 bytes
SHA-256: efc14f4cc21b34baaa0885ff8fe9ec6d9797742c9804de74c0a1bcf2b2c07cf4