Malicious PDF — malware analysis report

Static analysis result for SHA-256 29da2aa2977febf5…

MALICIOUS

PDF

104.6 KB Created: 2021-04-03 06:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: aee677beb13ad1971f534b1ca82ce846 SHA-1: 080f15863b7ce4f2ed7bfdd191e5ba04e204453a SHA-256: 29da2aa2977febf50e1f57ae5c5fc512b09470ad0d8dadcd31f52f055a1d68de
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The document body contains text related to 'adenomegalia causas pdf' and an embedded URI pointing to 'https://gimoguvi.ru/award?keyword=adenomegalia+causas+pdf', suggesting a phishing lure. While no scripts were explicitly extracted, the PDF format can embed JavaScript, and the presence of external URIs indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/award?keyword=adenomegalia+causas+pdf PDF link annotation
    • https://cdn.sqhk.co/letarezetap/CqLhfN7/localizar_mi_android_por_gps.pdfIn PDF document text
    • http://rodamajepudoz.22web.org/how_to_create_my_own_workout_plan.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/dictionnaire_de_l_acadmie_franaise_8e_dition.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/fases_del_proceso_metodolgico_de_la_investigacin_cuantitativa.pdfIn PDF document text
    • http://gosologesegob.iblogger.org/mukuxikidenusugitavedul.pdfIn PDF document text
    • https://cdn.sqhk.co/zonigita/agjImji/13990252060.pdfIn PDF document text
    • https://cdn.sqhk.co/litametun/hZmCeNO/vawek.pdfIn PDF document text
    • http://majikok.mygamesonline.org/basic_bodice_block.pdfIn PDF document text
    • http://budivev.scienceontheweb.net/mechanism_of_adsorption.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/wutogugej/princess_blouse_cutting_step_by_step.pdfIn PDF document text
    • http://gajumelixidolob.epizy.com/why_the_enlightenment_was_important.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/lagu_chelsea_grin_dead_rose.pdfIn PDF document text
    • http://sewemira.atwebpages.com/tratamiento_para_cancer_de_tiroides.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/69791393425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6010a03-931a-47c2-9f99-73e9ab948f5c/funesakulinemigipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b545a441-48b1-46ca-be07-a5e6d9d85a66/86068402254.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/23994439959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/744c09d0-86e2-416c-bb00-a3630a191207/26482443255.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_off00015887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15887 5368 bytes
SHA-256: 5ec449b9a67e6548ebc054a502029d180bc060b309f1dd2b3fa419cd96882c0f
font_01_sfnt_off00016ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AC0 14128 bytes
SHA-256: dc85cf92995d2a7f443066d6d96bdf33bed5b29e4d7cd38437da99f4bf012881

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