Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe861ef5835cb2f8…

MALICIOUS

PDF

74.5 KB Created: 2021-05-12 18:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4c7a047b9f920f4d4924d469bf5f1f4 SHA-1: 7b5d0dc79e1ba14112c473e9d936799b73809d19 SHA-256: fe861ef5835cb2f841bb2f623224da9fdbeb58e6f03a4f0b674877e4e1a6c3eb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a phishing page disguised as a parts diagram. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://ponafet.ru/strik?utm_term=troy+bilt+bronco+13aj609g766+parts+diagram
    • http://mowisadewojapu.22web.org/samsung_grand_prime_4g_price_in_india.pdf
    • http://zogagutezuwe.22web.org/xutajesuvunidubataj.pdf
    • http://retenenu.iblogger.org/autocad_lt_2020_download_offline.pdf
    • http://vuwulaviwu.iblogger.org/aops_books_free_download.pdf
    • http://pesetatin.iblogger.org/xabewixumusuzokebegalepa.pdf
    • http://motowifenizemuz.22web.org/passport_application_form_editable.pdf
    • http://wurilozi.scienceontheweb.net/how_to_develop_emotional_agility.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8fe101ad-cf78-42ff-9d74-2605fbde2ebe/2005_honda_odyssey_leather_seats_for_sale.pdf
    • https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_9a7eb3af187541dda6bbba4f91e39a96.pdf?index=true
    • http://tobidogajetu.onlinewebshop.net/tolusitofoleli.pdf
    • https://uploads.strikinglycdn.com/files/23d418d7-605c-42d4-8abe-122c6778925b/zopuvejufutedozakelodopo.pdf
    • http://vogidefoxafubis.epizy.com/how_s_life_going_answer.pdf
    • https://b81e1767-bb0d-4562-9f98-cfef66859bb1.filesusr.com/ugd/b48b60_0b7556b14c5348b3b928ba0a8976a2e5.pdf?index=true
    • http://vapufebifuv.epizy.com/types_of_alternative_assessment.pdf
    • https://uploads.strikinglycdn.com/files/402a4853-0f99-4fe4-895e-edfa44376bf1/53425013550.pdf
    • https://s3.amazonaws.com/xesigeze/60044522466.pdf
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_d4550b1583fb4e8a8d75fdd87f6249b8.pdf?index=true
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_f1e9455899d04e9ea66bb9a0cd6b8120.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4ffa572a-585c-49e7-8051-6f0ea6018785/xixopenobiw.pdf
    • http://jimomurapujivo.onlinewebshop.net/1190837199.pdf
    • https://s3.amazonaws.com/tuxutedi/kohler_dtv_mode.pdf
    • https://uploads.strikinglycdn.com/files/1ee92cf3-6edf-4cf0-adc5-2211b3f995a6/frases_del_libro_de_los_abrazos_de_eduardo_galeano.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e401.bin
c827b78d46a51ae4e1a0ed74f54d97657d4664cf93e99b309acdcff231709af1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE401 6408 bytes
font_01_sfnt_off0000f9c7.bin
add5cd9f1179b18d75e667a4787c4f66b75bb652417ff1aa764c3f9fcb78873b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C7 10040 bytes

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