Malicious PDF — malware analysis report

Static analysis result for SHA-256 207912f34457f0de…

MALICIOUS

PDF

69.5 KB Created: 2021-02-09 15:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5b77f7433d74be75f8231087852b2133 SHA-1: b29b18f73e44ef6a0b9bf8e335c7195cce53a0cd SHA-256: 207912f34457f0def999c583a54c6cf2d0711ae5ef88c90ba9a677c3de4a0209
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://baarspo.ru/wb?keyword=aku%20bantu%20apk%20pinjaman PDF link annotation
    • http://grizhoff.ru/54116405848fbpbb.pdfIn PDF document text
    • http://vurolak.iblogger.org/formal_dress_stores_in_omaha.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407996/normal_5fc876a73b52e.pdfIn PDF document text
    • http://tronreserve.online/streptococcal_sore_throat1m7ms.pdfIn PDF document text
    • http://starconflict-game.ru/32478412370rqv0g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491159/normal_5fd7025838d7e.pdfIn PDF document text
    • https://bapuporodotuxo.weebly.com/uploads/1/3/1/3/131381531/sujexokovenubof-dapolukudus-mugopipemupef-jizuxiloneg.pdfIn PDF document text
    • http://joy-todays.online/business_letter_template_multiple_pages8zrq2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385228/normal_6007fd45e82c7.pdfIn PDF document text
    • http://naturfresh.fun/7kk7xs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454694/normal_60036e26a7d55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385852/normal_5ff7a2a904081.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kitukogoxav.epizy.com/65129593392.pdfIn PDF document text
    • http://tepuxasimu.rf.gd/zowuxunu.pdfIn PDF document text
    • http://povuputuk.epizy.com/titapusifipavuwakek.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_off0000d4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BF 4928 bytes
SHA-256: f0a8e8c31643d6c437a99d44c537a3979dc6c1764694577c2221c6c6a4006112
font_01_sfnt_off0000e57e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57E 10648 bytes
SHA-256: 5f85f673d5a5565df90af4fc2c0975a622becba26d81dbb32373d15107f9652f