Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7cbfed32e432f85…

MALICIOUS

PDF

71.6 KB Created: 2021-03-01 13:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ea38ee4c6113741a7b29b80093773947 SHA-1: 504deb12020f346ec5721e87c20dc450acdc9a57 SHA-256: c7cbfed32e432f85bb37dd8c62277385dafc8858912edbcebe772aa931e729fc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=the+divine+comedy+book+set PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373779/normal_60302f11117a9.pdfIn PDF document text
    • http://chatik85939775.fun/cadre_photo_format_a4_ikeaqrc2o.pdfIn PDF document text
    • http://9gusevshop.space/86538717306zyry2.pdfIn PDF document text
    • http://goodshopsales.xyz/dageviwuruzinuivab5.pdfIn PDF document text
    • http://creditstar-kabinet.com/what_symbols_represent_buddhismv4skk.pdfIn PDF document text
    • http://testertumentum.space/telugu_feeling_songs_audiou2pus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414515/normal_600b5e3c1d016.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/seagull_by_anton_chekhov5mr7s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458389/normal_5feaf078df49e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403938/normal_6005caf837164.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_600985e60e749.pdfIn PDF document text
    • http://clipshd.design/17708384333mjqqn.pdfIn PDF document text
    • http://bossyonlinex.com/pink_panther_piano_sheet_music08xgf.pdfIn PDF document text
    • http://vizionsmc.net/528751191401ep7h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rolonitefokive.rf.gd/82634969084.pdfIn PDF document text
    • http://masegopadi.epizy.com/sinhala_children_s_songs_mp4.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_off0000dadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADD 5156 bytes
SHA-256: 4a76bdc43840156499d94d23b38ce7de585d52aa932fd4ffa8e9663139a1f9b7
font_01_sfnt_off0000ec57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC57 10412 bytes
SHA-256: 37bd150af4a7930b302d286f3f5373661617b7a27dcda2f2b139048ea91f8057