Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ac4dc897d74d0d…

MALICIOUS

PDF

77.6 KB Created: 2021-05-21 17:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 49fba610ba1a772d483c016dfde4f26d SHA-1: 51a901d31deb423edd71a08d18ed053157951d1a SHA-256: a7ac4dc897d74d0dd9ddccd73083a48b4a1050c317dd78fffbb3544636da1a78
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=touchstone+3+student+book+answer+key+unit+8 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lefemijip/october_full_movie_movies_counter_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f4b0c45-f761-4c2a-8875-9a84738e34c6/cummins_onan_generator_repair_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/561b1235-dd5d-42ef-89f1-a6f2cbd26a53/32365697057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa907928-ef6d-4d8e-bb21-132f17330835/xopusesi.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/pm_awas_online_form_rural.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3732b58e-8d72-4167-9f73-bab2913f1697/10274428315.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5b2e799-6581-4d9f-bbc5-49898f578508/79947095439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1926895c-e8a4-44fa-a707-495a410b3ba0/5e_character_sheet_app_windows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e385d0-754b-4c51-a4ce-ccc3f6e0bf99/hp_officejet_pro_8600_plus_printhead_repair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/969a7490-43c4-4a82-9f80-3ba270d7e636/raxabimuwatamavaroka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55a729d-7f27-4bc7-a9a2-38c17cd27d1f/difference_between_aci_318-11_and_318-14.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33489a2-a563-44e1-9782-73123d4da109/motorola_apx_7000_duty_holster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a51bfb0-05da-4efd-85cf-86a6a6ef969f/lista_de_verbos_regulares_en_ingles_con_traduccion_y_pronunciacion.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/who_makes_the_predator_3500_inverter_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0eb526e-da2c-4c0d-9423-1ddda8fc77bb/detonidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e435a07a-dba7-4866-857c-a744fca61f9f/distintos_tipos_de_archivos_de_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f95c6279-d513-4515-9bbe-1c4cdb8c6b3e/magic_tree_house_books_how_many_pages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4d14813-d3ae-473c-bbb1-ed464e83e120/how_to_smoke_turkey_legs_in_a_masterbuilt_smoker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da89d512-c16e-4156-bfd0-f562865f6f0c/75827388879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/656efa1a-d517-4909-ab02-5d1a8ccefc86/84665031375.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/75517641070.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_off0000f0e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E8 5700 bytes
SHA-256: 43bcad156464ce57f976cb66c71b99e7a353848e97f141da1312b384dcbca8d7
font_01_sfnt_off0001045b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045B 10756 bytes
SHA-256: 3dffb488869187d87fb0f470dee33983e36f79701d6fd5c5e578c3d376f09620

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