Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b07497c11960c54…

MALICIOUS

PDF

71.9 KB Created: 2021-03-01 05:12:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 37be13b0abd59916b3c24cd5dbca6d75 SHA-1: f5d66cc5e7102a7735ecb4b81aca70a40a8a1dbc SHA-256: 1b07497c11960c540cb5dca752021b1870eaac0897f1f5507e15790bc68f39f4
184 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
  • 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://dafemum.ru/strik?utm_term=simulation+and+simulacra+quotes In PDF document text
    • https://cdn.sqhk.co/jifegusewe/8T6JfVu/jaxovujukafos.pdfIn PDF document text
    • http://safagiko.iblogger.org/39074805618.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/2gbleGF/dazokezenu.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/1783946399.pdfIn PDF document text
    • https://lutaxabivuk.weebly.com/uploads/1/3/0/7/130740512/4124229.pdfIn PDF document text
    • http://varuzajuv.22web.org/destiny_2_forsaken_raid_guided_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484610/normal_5fe6c312eb1e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369333/normal_5fc8e558d8868.pdfIn PDF document text
    • https://bosamekuxukis.weebly.com/uploads/1/3/4/6/134672370/wowojozobanub-mivuwidatenija-xopupinojujexo.pdfIn PDF document text
    • http://peskomment.ru/what_is_the_enthalpy_of_vaporization_equationbtdy6.pdfIn PDF document text
    • http://timecodes.net/89195667200rhhuo.pdfIn PDF document text
    • https://kotazadan.weebly.com/uploads/1/3/4/3/134349323/mogelojot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530868/normal_5fe7e26a5c3ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://regipikiwubadov.epizy.com/bsc_agriculture_form_date_2019_maharashtra.pdfIn PDF document text
    • http://sobajagas.rf.gd/nc_dmv_drivers_test_study_guide.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_off0000dc48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC48 5316 bytes
SHA-256: 0493602412b74d80e47123f36615f91cabf47924869ed92b013406dfef0a59f6
font_01_sfnt_off0000ee39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE39 10724 bytes
SHA-256: aa81f6c0dabcda2a2053546488e001f9f8d42119f6ba5f8f66f402f4423c02ca