Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb2e81fcc9664db…

MALICIOUS

PDF

79.1 KB Created: 2021-03-09 15:31:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a774cfbf3a8e07c372dd6d58ece42e3c SHA-1: 8cb716aeaa81a31647644710012555bb06b2ea3a SHA-256: 1eb2e81fcc9664db6aedb90f5be0951ac7951a5d74a1345ee6d0ba67be266e2e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to 'golowaki.ru' was extracted, which is a strong indicator of a phishing or malware distribution attempt. No scripts were extracted, but the presence of an embedded malicious URL suggests the document's purpose is to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/strik?utm_term=como+agua+para+chocolate+analisis+%2528realismo+magico%2529 PDF link annotation
    • https://cdn.sqhk.co/zenekukera/idEghYZ/sad_video_status_for_whatsapp_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/haighj0/89166357582.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/Tiejehb/pakesafube.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/wjdCu0I/panekijewakajusadugix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/850e8e84-22ac-4623-9232-baf2918c3bf0/26508842300.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/9071046504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/600056cd-2a82-41db-afd6-a1744156a666/farmer_boy_laura_ingalls_wilder.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/5482371338.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/24511623876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb52eaa8-b761-4d88-ab96-7a77ea812ad1/jandy_jxi_error_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f85edda-b01c-498e-8ec4-4df81ab91711/zasuk.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/pulotu.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/how_to_calculate_surface_area_of_a_shape.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/facebook_lite_app_and_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf89e90d-ec2f-4dce-8e71-57cd2705d213/rangers_apprentice_book_2_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/how_much_school_to_be_a_dentist.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/tajimagebopotajejo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62d6989c-889a-462b-b4c3-5653c1a904c6/52951255067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc51adac-5fa5-49a2-ac6a-2e8427437e83/how_to_turn_on_shark_iron.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/dowabozuginusifegalal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40bee6c6-e02a-4718-8662-b37e6d14fff6/5th_grade_spelling_worksheets_free_printables.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/tokyo_drift_song_masstamilan.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_off0000f66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66C 5408 bytes
SHA-256: 3feac249af2a9c3a3f22a698f71460f81d82a5478e6604ef989081a58211e6ed
font_01_sfnt_off000108b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B0 11052 bytes
SHA-256: 081179aabb69eae9ac751a29020cbaf869f3181bf5bac601307dec2560ee0871

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