Malicious PDF — malware analysis report

Static analysis result for SHA-256 6503cac55e8bad99…

MALICIOUS

PDF

69.2 KB Created: 2021-02-22 12:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44d4f4ad7e46268e5fcddfc8abc6855b SHA-1: 8797ca4279ef37f63836b20cbfae75641afb5e91 SHA-256: 6503cac55e8bad99f973a5065ddcfbb1306cd9ede5ae4486291ac2184769c414
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=catholic+youth+organization+basketball+omaha+ne PDF link annotation
    • https://werotibumef.weebly.com/uploads/1/3/4/9/134900185/sotabosef-wazulijas-vowigidikes.pdfIn PDF document text
    • https://kobawepa.weebly.com/uploads/1/3/1/0/131070010/6290990.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503279/normal_6010648d804bf.pdfIn PDF document text
    • https://mokoxofedig.weebly.com/uploads/1/3/4/8/134891763/tojuw.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/icphgjb/39871505645.pdfIn PDF document text
    • https://rosififobagas.weebly.com/uploads/1/3/1/1/131164218/fugugunajef-wexolekanexus-wemelan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372101/normal_60061c5cb441b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389570/normal_5fc57bdc21874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501963/normal_5fea218da32b2.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/numegubowalonan/ableton_reference_manual_version_10.pdfIn PDF document text
    • http://fugulimenar.rf.gd/disovupukilaxivobepi.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_off0000d149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD149 5472 bytes
SHA-256: 7f181c4eb25476a75c90d93e16366caa4bc36784648d67554d6f5372fe2616aa
font_01_sfnt_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 10504 bytes
SHA-256: 11d2b2ad32f7823868beec06c66fdc4a2fcc9d1fdf778220e0409c1ed38636fd