Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f02ec10cfc249fb…

MALICIOUS

PDF

61.5 KB Created: 2021-02-15 00:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d2f9ffaa6f7793dce3cd3c0c59f4c02 SHA-1: 2c9ac48d15893121e8d81cada69cdcf3d68f3349 SHA-256: 5f02ec10cfc249fb48988e73d762da83c117a6f0c390fb228d7d43bb5497024c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/wix?keyword=factory+physics+2nd+edition+solution+manual+pdf PDF link annotation
    • https://bodupakodekafas.weebly.com/uploads/1/3/2/6/132680796/5782685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5fe647a580cc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412900/normal_5fe5f4c55ca92.pdfIn PDF document text
    • https://cdn.sqhk.co/senagoxosog/giLIheH/xipekuwinizavesuxaxulegox.pdfIn PDF document text
    • https://cdn.sqhk.co/zokasejiz/idoYnji/semesufibopufumabupos.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/5Rgcifn/forulaful.pdfIn PDF document text
    • https://xetudutadoboja.weebly.com/uploads/1/3/4/3/134344850/b4e4c8e69360e.pdfIn PDF document text
    • http://callup.today/wunikafuxnu6da.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/pigupe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418180/normal_5feb8de3c113f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412170/normal_5fe1b1cfd22f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_60226c6cc44f5.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/xunilukegez/59456314737.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/flow_diagram_template_word.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_off0000b459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB459 5584 bytes
SHA-256: 437fc43acf25bfb2640260add727185858c6a097cd44cf7b0301a6ca516e9909
font_01_sfnt_off0000c73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73B 9936 bytes
SHA-256: 4103263a96ed3bd67f7810e59cbf6a792c865c2ce5294e7feccf4b953cee621d