Malicious PDF — malware analysis report

Static analysis result for SHA-256 09eb8c31854eafae…

MALICIOUS

PDF

69.3 KB Created: 2020-11-10 13:36:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: dd9d2741b7e301b963c6286c2c641e4a SHA-1: a54b652dca97b57933940e09d6a8fc88aeb51ff1 SHA-256: 09eb8c31854eafaedbf7c96873a5a925b3ba56b0da14a6b2932ac2e5529218ed
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://trafffi.ru/strik?keyword=druck+season+3+episodes PDF link annotation
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/gorozoj-jogolozefejon-nirigolatomob.pdfIn PDF document text
    • https://rebabamebuno.weebly.com/uploads/1/3/4/3/134355200/zamusevono-nefowudotu-fibud-sixomopitonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_5fa446f563e94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5fa25825721a1.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/mojudedosi_gugakazeno.pdfIn PDF document text
    • https://vemewibikem.weebly.com/uploads/1/3/0/7/130776349/1fda537b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_5f9eb4c45ba0a.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/e9004b3ab9bd7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448986/normal_5f9f8e205bee7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447647/normal_5fa46fbade7f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5b7e26e-b12a-48b2-8e14-84ce36309f5d/pirij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee73baf-43f0-49b2-bf4b-5dfc0a275372/87045853832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61df7368-da52-4299-ac32-e1b7357ec25c/navufulatapigazesomagisus.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_off0000cd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3D 5264 bytes
SHA-256: 1ae4516ca30eb8fe9f1bf87d9b31beda7274740111d77d81a1a37dad4005875c
font_01_sfnt_off0000df3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3B 12532 bytes
SHA-256: e392f061181674f0b911f92fc45d9307f7762833c14a1cdd6eafc5a4b992567a