Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b9ccf37bf06a22…

MALICIOUS

PDF

65.8 KB Created: 2021-02-24 04:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 380e2287d960f4281d054cdd50ae1d67 SHA-1: b684edcdfce6ae641a66c7b67caf76faa2d04cbc SHA-256: b6b9ccf37bf06a2269da5cc0b50a72986cd6c3221c87a927a5eb11dfe11c5d6f
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=button+covers+for+jeans In PDF document text
    • https://static.s123-cdn-static.com/uploads/4474206/normal_5fecc52fb3be9.pdfIn PDF document text
    • https://mugokirupela.weebly.com/uploads/1/3/2/6/132681863/wiwekugobomebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469136/normal_5ff88db130d98.pdfIn PDF document text
    • https://bewizujire.weebly.com/uploads/1/3/2/3/132303264/0c608f048736.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/cb1940653d2f1d.pdfIn PDF document text
    • https://mafaredoli.weebly.com/uploads/1/3/2/6/132695491/libaxofozitos.pdfIn PDF document text
    • https://fekazivijiwawad.weebly.com/uploads/1/3/4/6/134687088/zitokebifusut_pejivom_makamuv_folewijezilukog.pdfIn PDF document text
    • https://fikugutadopoxas.weebly.com/uploads/1/3/4/3/134340330/3300179.pdfIn PDF document text
    • https://cdn.sqhk.co/kejopala/5k8hpts/kafakopisoxorovuza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500183/normal_5fd2f20370d0a.pdfIn PDF document text
    • http://bavewemelemare.iblogger.org/the_new_tribe_buchi_emecheta.pdfIn PDF document text
    • https://wipasajumavadus.weebly.com/uploads/1/3/4/7/134775966/saterikogebizeze.pdfIn PDF document text
    • https://fosozofafeg.weebly.com/uploads/1/3/1/8/131856121/6990040.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408586/normal_60215dfd29e4e.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/zodawanuror/india_csr_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/23529236773.pdfIn PDF document text
    • http://roragopijejem.epizy.com/mufesolusilabifopiterigom.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_off0000c5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F1 5028 bytes
SHA-256: cfe3715a08e795b8c3f0b0a8ef633188433c3c7e96f58bba3fcd177bfe5580cc
font_01_sfnt_off0000d72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72A 10236 bytes
SHA-256: 7a59b3ca41fb23ffd3bcf9330ba68b6d3ec3cd4322657905cdeab847468ac2cf

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