Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d1a57f25e6a7b38…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 15:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 130b2a2bbd3cb4c71d660d89c22cf1c2 SHA-1: 3c698a1e4c4351e3d05df20db2efdc56fa34bf5b SHA-256: 5d1a57f25e6a7b383c2e77bda4a55362944f27bbbccca58daf98aa0e121ff217
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body is heavily obfuscated and appears to contain junk data, suggesting an attempt to hide the malicious intent. The presence of numerous links to disposable hosting and potentially malicious domains indicates a campaign to drive traffic to attacker-controlled infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/award?keyword=seven+years+old+song+mp3 In PDF document text
    • http://vovality.club/stick_man_games_unblocked6tosq.pdfIn PDF document text
    • http://bibuwobu.22web.org/marx_capital_volume_1_gutenberg.pdfIn PDF document text
    • http://beststudent.space/nutekozanimikifikisg2u4.pdfIn PDF document text
    • http://sevastopol.sale/pukofixidesitituzoxkc08p.pdfIn PDF document text
    • http://firstsecu-paypal.com/mini_budget_2019_pakistan_in_urduz3fjc.pdfIn PDF document text
    • http://electorat.org/cool_easy_drawing_ideas_for_beginnersd8c1b.pdfIn PDF document text
    • http://rent-nout.site/import_excel_spreadsheet_into_access_reportsmct8.pdfIn PDF document text
    • http://tdsevsvet.ru/semi_monthly_payroll_calendar_templateqhszf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nasedelowose.rf.gd/systemic_vasculitis.pdfIn PDF document text
    • http://miviguwi.epizy.com/82172949057.pdfIn PDF document text
    • http://tuwetixa.epizy.com/certified_ethical_hacker_lab_manual.pdfIn PDF document text
    • http://tosodesuvivat.epizy.com/free_high_school_resume_template.pdfIn PDF document text
    • http://novosumagib.epizy.com/gudowikizovi.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/54059029832.pdfIn PDF document text
    • http://gijifosunusu.epizy.com/bts_fake_love_full_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/woolworths_job_applications_form.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/banco_santander_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/fcpx_audio_visualizer_free.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_off0000d7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AB 5708 bytes
SHA-256: 2501ee2f9eb8c90845f9a00ecc1b6497bdc1ff8f006447dd7785d8d97dcc65a0
font_01_sfnt_off0000eb12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB12 10380 bytes
SHA-256: 17af27ae9f408e155e1ce86e89bd0045879ab5da686a3e48a8139c92c7c66d6b

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