Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c97e52cc89e5dea…

MALICIOUS

PDF

78.3 KB Created: 2021-04-01 19:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7da08c6205745dd17b9165e1413c0271 SHA-1: 7a4a8cd384d788bd2630a85dc34b900e0ed347eb SHA-256: 1c97e52cc89e5deaf57cc228496c743dc1c2b1a0bb56b80ea8b1ac9495a4ee6f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to potentially malicious domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=beloved+free+movie+stream PDF link annotation
    • https://cdn.sqhk.co/wojipezusax/heghohf/verabuwofamudibexiw.pdfIn PDF document text
    • http://mabojexovepa.22web.org/59455094048.pdfIn PDF document text
    • http://sajutasure.22web.org/bowdichia_major.pdfIn PDF document text
    • http://vawuzusodiguse.iblogger.org/felijijexaxa.pdfIn PDF document text
    • https://vebavorosufate.weebly.com/uploads/1/3/4/7/134742301/nomexalujunol.pdfIn PDF document text
    • https://jaduxopedarev.weebly.com/uploads/1/3/4/7/134749363/gifuno.pdfIn PDF document text
    • https://badupulok.weebly.com/uploads/1/3/4/8/134855905/bitivosa.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/kgj5bdq/black_widow_bite_timeline.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/gvhhjie/silver_dollar_city_big_christmas_tree.pdfIn PDF document text
    • https://xonajababivoxo.weebly.com/uploads/1/3/4/0/134040492/pufulubad_kagiv_luwowakiv.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/janodojivi/trademark_symbol_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67fd4e8d-24bf-4fb0-9a80-b23ca7cf9e7c/35881049758.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/zaxuzolopofibonoz.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/garmin_vivofit_3_vs_xiaomi_mi_band_4.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/does_keflex_interact_with_metformin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09773274-45d7-4cba-a5ed-265789001aaa/software_development_project_manager_interview_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/111842cf-a58e-4e95-b6ab-89109437a545/persuasive_writing_topics_for_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/athena_and_arachne.pdfIn PDF document text
    • http://bepizokebador.epizy.com/brain_dead_full_movie_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a82308b-ea82-4dac-8a00-f3af3331e7d9/the_ending_scene_of_it_chapter_2.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/jawofeguruku.pdfIn PDF document text
    • http://zepinurubav.epizy.com/warm_bodies_full_movie_in_hindi_480p_watch_online.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_off0000f58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58E 5164 bytes
SHA-256: 5c3f9493d8b1a9015c6b380412944fa7a596a4693e7daf7e06d5bde8a5db5159
font_01_sfnt_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 10872 bytes
SHA-256: 8c2f627c8768b8a29251a449de02068f6199f66c0c882b54fd1b893fbb35baf1

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