Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f9cadb876460e7…

MALICIOUS

PDF

70.3 KB Created: 2021-03-28 13:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 69f86e2ed5c870f3ed66565d20a8c725 SHA-1: d07ab207d0f366d1ba323b84010eaa48c6a625ba SHA-256: e0f9cadb876460e71409cd19d8f4045c3f484923f8fbd1651bef80a856b36b9a
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'dafemum.ru'. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'line 6 pod xt live', suggesting a phishing attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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=how+to+use+line+6+pod+xt+live In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_602d86ee68a67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_5ff4f20bc8e4f.pdfIn PDF document text
    • http://olymp-trade.top/razaxiletepefuroxawufur5gpaq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379035/normal_5ff6a791b82ad.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/easy_daniel_fast_meal_planmk7tn.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/vexeliku/92942197349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17316075-1b06-4fe2-b491-254a94f8a652/55609085024.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/39773767158.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/43310591625.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/ge_centricity_training.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2497ca65-f3fa-4cc6-be5a-3815e22c1613/adverbs_that_are_not_ly_words.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/sql_server_database_size_growth_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0323ae5b-d11c-407f-978a-698039e360f3/answer_sheet_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dd8978-6575-4eb4-98ce-abc97d4f59d1/samsung_galaxy_s9_charging_port_repair_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737f7444-2b92-4140-8549-1e18b05ada6a/nigavovo.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/income_statement_and_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/android_studio_listview_set_adapter.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/donazifezenudujem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4027e27f-c253-4ad6-98bd-32d795f53770/80026632511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ddc9173-125b-45cd-9f66-830e494c4936/david_walliams_family_history.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_off0000d4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C8 4984 bytes
SHA-256: d0e8a99a1c5698ba1385784e73a5c52dc2cc61452c30694a429e82f90e47b9fe
font_01_sfnt_off0000e5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E7 11356 bytes
SHA-256: e2a278c19e65a576c5b11850797c0f7554100e37e4f49941578cf0e9ad51bf56

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