Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec02d45de53d9995…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 00:54:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 452958195351f8efa5575428dbb95388 SHA-1: 63e7da14daee525368dde02f2c1fa80075059046 SHA-256: ec02d45de53d999541ff034c6282470b6cdb1f0e41462db211c18a3b298426c2
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://druttle.ru/award?keyword=hunter+x+core+residential+irrigation+controller+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fe9874183d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fea1bc5d7c8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469847/normal_5fc8dbb4e40aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_6036a46c786f9.pdfIn PDF document text
    • https://vifazadaza.weebly.com/uploads/1/3/4/8/134883600/5867920.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5ff8c091b388e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487906/normal_5ff7a4a4f40f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384026/normal_600181e48cfb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401714/normal_5fe388525b514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424341/normal_5ff77a782a3b9.pdfIn PDF document text
    • http://bejisosubonito.sportsontheweb.net/transition_words_for_your_second_body_paragraph.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449000/normal_5fcd6637200a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5fd70cced315c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zixupav.rf.gd/44697157684.pdfIn PDF document text
    • http://bubaxomunuf.rf.gd/66903778377.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_off0000dfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD1 5288 bytes
SHA-256: 34833d2ad7ac8826fa6d508eea63e47faffc3016f917793ab54f551e332cd891
font_01_sfnt_off0000f1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B8 10420 bytes
SHA-256: 1e69bb0d1fff1b702f12b35d5009ea1c28047b0c49971f8f55c2ecf8485e6c65