Malicious PDF — malware analysis report

Static analysis result for SHA-256 be56473f4325a064…

MALICIOUS

PDF

82.9 KB Created: 2021-05-01 04:17:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: aa462afd24ba6babf85e09d16c1ca99c SHA-1: c1cf8006e6d6a8de858d88c5bf6fab5f231d6b94 SHA-256: be56473f4325a064f957ef77c23da0ad0135420d247e14e6883208090d2f4d03
192 Risk Score

Malware Insights

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

This PDF file contains a malicious redirector link, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, suggests a lure related to 'Ford f250 owners manual 2021' and includes urgency language. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish credentials or deliver a secondary payload via the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yafferge.ru/strik?utm_term=ford+f250+owners+manual+2021 In PDF document text
    • http://xipodijajul.sportsontheweb.net/bach_prelude_in_c_major_free.pdfIn PDF document text
    • http://joxezorov.mywebcommunity.org/fimobixunurevimipa.pdfIn PDF document text
    • http://peramen.22web.org/antenna_theory_tutorialspoint.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/51715965225.pdfIn PDF document text
    • http://sufawevugut.mywebcommunity.org/21937033471.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
    • https://s3.amazonaws.com/labitajaxatufib/free_wordpress_templates_for_school_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b7f291d-faf2-4195-b5db-fbae779a14bc/xuwibidemedegojobobiguwe.pdfIn PDF document text
    • http://lenisemi.epizy.com/media_and_information_literacy_definition.pdfIn PDF document text
    • http://mepitar.atwebpages.com/7007793355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49e83198-8d40-487f-94f3-7fcc192d5694/can_i_move_my_directv_genie_2_to_another_room.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/12622747188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d3fb88-a637-4235-8cd5-d4e15cb32f1d/how_to_mind_control_others.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/jiferok.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/92720062684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc0db6e-a72d-4536-9986-d92d1aa0446b/41322528364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1d058f-2b49-494a-987c-ce51fe5dfe9e/pikufuragevemanamuzil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbdb12a1-981e-4c18-9601-e3c9a7093443/python_2.7_list_all_files_in_directory_and_subdirectories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb928543-e9dc-4607-831e-d642f636dbb5/mevurozol.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/compound_interest_questions_for_bank_exam_in_hindi.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_off0000f6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DD 5304 bytes
SHA-256: 75a8e00048a21f3f9f2fe8ad3e8189cb7f2e344230f60c601b54ca9546496f76
font_01_sfnt_off000108e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E6 11080 bytes
SHA-256: 5f2cd92c100b33ccd799a465e1a05f572046119625611c02823893aefce56e55
font_02_sfnt_off00012ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBC 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71