Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d291e50e438bae…

MALICIOUS

PDF

77.3 KB Created: 2021-03-25 15:14:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f1e7c1daecaa8425d302712e197b5b2f SHA-1: 8b8ef8b3b430c4086985ff60a862aa18b747248c SHA-256: 44d291e50e438baecdc9824f8a2682b69e93b28ce8bb0f25640d2cfedcc41478
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, including one pointing to 'xezojetit.ru', suggests an attempt to redirect the user to a malicious site for downloading further payloads. The heuristic 'SE_DOWNLOAD_BUTTON' further supports the phishing lure aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/award?keyword=bailey+and+love+surgery+26th+pdf PDF link annotation
    • https://cdn.sqhk.co/pevedapev/7Ahhagm/geranomoruwumed.pdfIn PDF document text
    • https://cdn.sqhk.co/kolusugego/khgja40/capitalism_is_an_economic_system_in_which_sociology.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/cjhjfij/80039409581.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/Vjehbgf/virgin_pulse_northwell_health_login.pdfIn PDF document text
    • http://oneshops.space/61994579884k6uga.pdfIn PDF document text
    • http://pet-guru.shop/ragomilsj3p.pdfIn PDF document text
    • https://cdn.sqhk.co/kolusugego/Qgfjcjg/jolulizubimonogoz.pdfIn PDF document text
    • https://cdn.sqhk.co/ninuxoti/ife8kmq/skylanders_trap_team_trap_master_blastermind.pdfIn PDF document text
    • https://cdn.sqhk.co/reparepoki/ibjgLPq/50234433637.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/dejolavubukugeb/xowidatovefirerilasup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93baced6-93a6-414f-a7f2-7edbaec743cd/53980150284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a333bb6-69cf-489d-b5ca-0d8d3fca205f/itil_v3_foundation_complete_certification_kit_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wizakokowe/52772995425.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/6490495349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92303501-3e9f-40ee-a89f-23fd1be2fb68/26567485842.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d518849f-dd08-4cbd-950c-390278c3b923/forix.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/jenuvududitatugepagigeli.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/vetasen.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/28325381722.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/13373381137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e7137e-3c79-4b48-af1e-cc7d7205fd62/lost_at_school_chapter_7_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/compressed_mask_paper_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE524 5800 bytes
SHA-256: 920c60802a3e0e071bc9c1c8ed62a304bf6a81645948dc8d428f647e6ebaa44d
font_01_sfnt_off0000f8e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E8 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00010176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10176 11176 bytes
SHA-256: 28b6a511cfd8f0fc8c0f5567198f8c3392aae1e5340f17c793c1829251fbcae9

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