Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a1709fdf8653c6…

MALICIOUS

PDF

102.3 KB Created: 2021-03-30 10:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 3e76d961c50b4b4617695e03feb88a3c SHA-1: 62e327d7d13a53d1dffaf762142b32837d56b8bb SHA-256: 47a1709fdf8653c6149802993125b8e76e282a49c7696ece5609139651ccb005
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with many pointing to disposable domains and flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://vilenefex.ru/wix?keyword=night+surf+stephen+king PDF link annotation
    • http://bizowokare.getenjoyment.net/fudilerigin.pdfIn PDF document text
    • http://favarorul.iblogger.org/palaluvivo.pdfIn PDF document text
    • http://wedevaz.sportsontheweb.net/sub_zero_fridge_for_sale_toronto.pdfIn PDF document text
    • http://nunejabu.scienceontheweb.net/netiwesuxowubuwitixedizin.pdfIn PDF document text
    • http://bovakepixoworax.iblogger.org/lesson_4_problem_solving_practice_dilations_answers.pdfIn PDF document text
    • http://luxibenuguk.getenjoyment.net/24455447542.pdfIn PDF document text
    • http://jinevul.mygamesonline.org/health_and_physical_education_class_11_vk_sharma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367940/normal_5ff137c4e5914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409123/normal_603759f1038fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_603540dd7c7ff.pdfIn PDF document text
    • http://terugate.mypressonline.com/springfield_college_map.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tipumajusu.rf.gd/54911195401.pdfIn PDF document text
    • http://tadabafilebe.epizy.com/ludimumif.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/pevizokowimiwibikovulebo.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/58880491722.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/calendario_2020_italiano.pdfIn PDF document text
    • http://supisaminuwon.rf.gd/rainbird_5000_nozzle_guide.pdfIn PDF document text
    • http://fokerek.epizy.com/inventory_turnover_account_on_balance_sheet.pdfIn PDF document text
    • http://zemipajobo.rf.gd/vivapumesebidamoxekoguf.pdfIn PDF document text
    • http://zarazemudaseri.epizy.com/battery_saver_samsung_apk.pdfIn PDF document text
    • http://risepaxazitomep.rf.gd/why_does_kanekis_daughter_have_white_hair.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/ffxv_omega_weapon_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/midatene.pdfIn PDF document text
    • http://residarifuwus.rf.gd/capitalize_days_of_the_week_worksheet.pdfIn PDF document text
    • http://vexabimumemig.atwebpages.com/parewebubafa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001449f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1449F 4724 bytes
SHA-256: 23d38834bfbe4313cd92ea28be1c9965cf79f5b2a7718eafb184da5ddf01fa6d
font_01_sfnt_off000154b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154B4 12388 bytes
SHA-256: b72fd8d25c1d2cd25b60879d24c1f061f0c95a5be0377d05316b427d52d1a4b7
font_02_sfnt_off00017def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17DEF 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.