Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d21ef3d4fab2e1…

MALICIOUS

PDF

78.1 KB Created: 2021-03-29 05:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e67e68d28eec7d92b4c61aa828c29ec8 SHA-1: d9830ab5010030ca4fab288b675be19534939bf8 SHA-256: 60d21ef3d4fab2e10e959e831ec53375bb022a0327e4738e264ad66a7a0fff89
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests a link farm on disposable hosting, and the presence of external URIs points towards redirection to malicious sites. The document body, though heavily obfuscated, contains keywords related to 'world war i worksheets' and application metadata, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://dugedepap.ru/wix?keyword=world+war+i+worksheets PDF link annotation
    • http://wopurijosepi.iblogger.org/negitos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_60172c7c7d1a9.pdfIn PDF document text
    • http://omshop.space/14552412542jbgzg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476947/normal_603e290d14ca2.pdfIn PDF document text
    • http://konsalting.info/descargar_musica_mp3_frankie_ruiz_desnudate_mujer9vqqq.pdfIn PDF document text
    • http://winoorama.fun/gawusuvev60c8u.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/wukevirenesu/how_to_use_a_wildgame_card_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/dictionary_of_bible_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac62e56c-6b00-474d-9773-ae82337a174a/how_to_return_a_letter_to_sender_ireland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e1f6c0-4bc6-4eac-b001-c0f832bf1c47/taloxibekakopijuzejofim.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/visual_studio_for_mac_android_device_manager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada56ef1-64cf-4b32-a502-28da1a38f90a/96491609001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cb54b77-d77e-4fda-9b60-08d96033bb1a/36926799641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ecdcc2-4645-4efd-b59a-2cd6b9baeb57/45484358036.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/plan_de_negocio_crianza_de_cuyes_peru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc62196e-2d35-40ef-92e0-1e09e53f1981/bixabopap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccaf24c8-e94a-4abc-b2e8-a323c7ae3d9d/can_a_company_decline_solo_parent_leave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb18505a-a0c1-4f21-b2fc-9b2b1500bffa/python_setup.py_egg_info_check.pdfIn PDF document text
    • http://dasujisetojasel.epizy.com/template_particulars_of_claim_debt_recovery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a9bee0d-5749-44e0-bb6b-98366f065030/85621678660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c286a04-eb5e-47e5-90a5-7a13cea76e5a/el_juego_de_la_vida_y_como_jugarlo_resumen_capitulo_2.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_off0000f637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF637 5084 bytes
SHA-256: 6d026f15cf18caef5fe2bad0787619ce854179949add176a9f6da9320189e675
font_01_sfnt_off0001078f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1078F 10468 bytes
SHA-256: 3d685ceeb4011d27596bc2ea2b264e959a92c666856ad2ab4f1f2c7af27cc4bb

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