Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9bfd8b72338005…

MALICIOUS

PDF

73.4 KB Created: 2021-02-27 19:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 451b7a53bed34d938fae2f9d7defaad3 SHA-1: eee088dedd47a170738766a4abbeb8e3cd87187c SHA-256: eb9bfd8b72338005affb42094ec5b36c520f1e6358ef8d5031d0dce84c65b3d8
186 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.
  • 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://kuzutuzo.ru/award?keyword=how+to+get+into+family+feud+canada PDF link annotation
    • https://cdn.sqhk.co/xadeviro/hejcigr/idle_world_2._7_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/pmgjSEB/the_bowery_nyc_bar.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/dbwoib1/microsoft_onedrive_pricing.pdfIn PDF document text
    • http://mnogolidov.xyz/membrane_separations_technology_principles_and_applicationss3kq6.pdfIn PDF document text
    • https://jasiximipiz.weebly.com/uploads/1/3/1/4/131453573/6092563.pdfIn PDF document text
    • https://fovevirikat.weebly.com/uploads/1/3/0/7/130775443/sixuzupegimi-konojozojetuv-matotalagalur.pdfIn PDF document text
    • https://nawiveburejofi.weebly.com/uploads/1/3/1/3/131381882/tujokivoxed.pdfIn PDF document text
    • https://cdn.sqhk.co/fowurona/jggeDhP/vetunubinixagerur.pdfIn PDF document text
    • http://nopisodozig.66ghz.com/69946277939.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/fotepopunaj/39506286212.pdfIn PDF document text
    • http://lenixad.epizy.com/world_conqueror_3_campaign_guide.pdfIn PDF document text
    • http://dilizefolu.rf.gd/pejuwizojek.pdfIn PDF document text
    • http://nugafafekovad.epizy.com/hoyle_card_games_2005_pc.pdfIn PDF document text
    • http://sabixisadosafa.rf.gd/hematology_anemia_guidelines.pdfIn PDF document text
    • http://puzasapexuwuju.epizy.com/worksheet_on_isosceles_and_equilateral_triangles.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_off0000e32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32A 5220 bytes
SHA-256: b22be96402f27201eada217119207ada148d88d8fe6769dc5894c1fa82c9f9f7
font_01_sfnt_off0000f502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF502 10412 bytes
SHA-256: 578a4f71c71931c994b9437f903e113c25edea42d0be42f51ab82fb8b173d69c