Malicious PDF — malware analysis report

Static analysis result for SHA-256 39069b5347363628…

MALICIOUS

PDF

71.9 KB Created: 2021-02-22 04:40:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 654b90cd555077ad8dde2e69cf4c44fc SHA-1: 676c00f93a0bd209d2c9eea5b86b5491c8628db0 SHA-256: 39069b5347363628537fce3de0fe916c15e87fbd84b3c6c770904e0b4cb8d4d9
184 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
  • 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=avalon+rainier+wood+stove+manual In PDF document text
    • http://glawerry.online/temperature_conversion_worksheet_celsius_to_kelvin603do.pdfIn PDF document text
    • https://najoduvojubowi.weebly.com/uploads/1/3/2/8/132815002/1949927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd67102e731a.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/bhfvggG/how_to_use_tinnitus_help_app.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/ghjmgix/26087257100.pdfIn PDF document text
    • http://mklhhhh.space/kutiverujonewbf83j.pdfIn PDF document text
    • http://atlas-copco.su/ritamepusamuduvakudoveddrcb7.pdfIn PDF document text
    • https://fixexetakofipu.weebly.com/uploads/1/3/3/9/133997797/afd626.pdfIn PDF document text
    • http://jewigekavevexi.22web.org/39118035230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450036/normal_6006e5a2f1821.pdfIn PDF document text
    • http://cosmeteca.com/how_to_adjust_barnett_crossbow_scope5kish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368949/normal_5fc979163fc6f.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/mYgdJjf/62170618326.pdfIn PDF document text
    • https://nukanomipixi.weebly.com/uploads/1/3/2/7/132740264/fatosoxodez.pdfIn PDF document text
    • http://merutakozuxonu.22web.org/barbados_citizenship_by_descent_application_form.pdfIn PDF document text
    • https://xasigusuvenazuj.weebly.com/uploads/1/3/0/7/130739755/a5da6b50ae245.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mevalegija.rf.gd/15298565374.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/mystic_messenger_guide_deep_story_day_1.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/kedevaba.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/android_studio_rename_full_package_name.pdfIn PDF document text
    • http://povugilovup.epizy.com/tula_bright_all_night_sheet_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/google_android_robot_name.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_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 5112 bytes
SHA-256: 2c4dcd61393b6022a84c103a28e494a9d5c28c580e6e82eb1a3e724ff732decf
font_01_sfnt_off0000ef72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF72 10240 bytes
SHA-256: c537960f849d62b3b9258329eb720571b3356bec56895eea0cd3fa55576a9219

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