Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ab711b9e355bc9…

MALICIOUS

PDF

67.1 KB Created: 2020-11-10 06:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b8a47d517836d4ba783efe43541ecec8 SHA-1: cd812c9341d6bda77afb6331413679dc14e4ae04 SHA-256: 02ab711b9e355bc97fcac6de338fe012d9180ccad8a94f4b6105faf53e4b507a
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/aws?keyword=kodi+18.7+leia+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417536/normal_5fa02ce293779.pdfIn PDF document text
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/mumajawadegew_winov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f8a08a58d3b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5f9b213645212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409098/normal_5f92d941d72c1.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/4469595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450634/normal_5f9fda566673e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408478/normal_5f94fb4b16f6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5f9ddb5ad835f.pdfIn PDF document text
    • https://voteriboxovoviv.weebly.com/uploads/1/3/4/3/134352377/rapoka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_5fa3402c7d3f0.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/a7337d93-ffcf-4800-ae89-c5864a71ab2c/45752317357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b130562-d583-44e7-ad5b-35b496b64da9/21994125334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a651ea8c-5ae7-40db-a0d2-9eb4f43bfb7b/39468160212.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_off0000c9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CA 5068 bytes
SHA-256: 4b99673df5940a8468c632df3c65a2be01790832ce8e4b2d64884753bfb8f5ad
font_01_sfnt_off0000db33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB33 10676 bytes
SHA-256: f3b26a18e1bec7e5bde842c05a4648fd60189de46d9a0aa32606b4d736859124