Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1cde1ddc5fc58c…

MALICIOUS

PDF

78.8 KB Created: 2021-05-02 10:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d5134620438332fa4b098c1aaea885c4 SHA-1: 251cbc2d0b20a6db621ed91c2362a410cd22a877 SHA-256: 4e1cde1ddc5fc58cf57f09c622592fd6f95533681679834429f9a1cf404c109b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to 'Mercury boat engine repair'. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/strik?utm_term=mercury+boat+engine+repair+near+me PDF link annotation
    • https://cdn.sqhk.co/vumusokutil/hazieha/52728232197.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/iHuiejc/flights_to_las_vegas_from_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/nofevemumidu/hbXgehd/72263191331.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxedanafowa/WsrhjiR/battlebox_teepee_tent.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/d76arUF/battle_city_2_players_free_download.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/kapodevexeru.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/5nzBEUV/100_days_my_prince_special_episode.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/hdhqmWC/introduction_to_international_business_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/tobajizil/egiidnr/free_student_software_autodesk_education.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/702fc3a7-88c6-481c-b130-0af240f96a34/fexugirukalupup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6211823e-f4f9-44ca-b8fb-e59ce70ad650/icd_11_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce5a60d-ab17-4593-aa99-f052e08fbf54/33279573163.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/vegipevezimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91dd1995-4975-4639-9637-5fd7fe409860/34327876309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8cc6f66-2465-445f-86f0-497d47d2079a/what_size_battery_does_apple_tv_remote_take.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02e172d0-581b-413f-839f-29033d2cd054/foxit_editor_with_key_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/bircher_reglomat_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0950bbec-291b-4b11-bd4b-2e100547333f/24166423075.pdfIn PDF document text
    • http://zibevili.onlinewebshop.net/carteira_de_vacina_cachorro.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/call_me_by_your_name_free_stream_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bde16f-e459-4368-bb19-a17964e4912e/97637830217.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/nefirisuxebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a3a7d9-044d-4298-9a6e-4ea27aea0618/39283504474.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/92138306116.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_off0000f7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D5 5292 bytes
SHA-256: 44e713da1bcf31e6b1b85e7c4ce43bbf01d80d14f8bd13e1568b023f3abac0f8
font_01_sfnt_off000109da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DA 10588 bytes
SHA-256: 9b6cf125590ca523f8dcff112069e236e27903a0bce2f850521eaa39751e552f

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