Malicious PDF — malware analysis report

Static analysis result for SHA-256 51a586b8ff0001c7…

MALICIOUS

PDF

74.4 KB Created: 2020-12-23 12:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4c8d36119db8d1d9cd53272d368124ec SHA-1: 28f6452effd983ab76d94c4e486bada5baaae0d7 SHA-256: 51a586b8ff0001c7eeda305ed964617865d787f97818e902fa787e860b24e743
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, masquerading as information about photography equipment. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the overall classification suggest a social engineering attack.

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://trafficel.ru/123?utm_term=types+of+flashlights+for+photography PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f875d4cf41d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394061/normal_5fcc5331a429b.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/tadovu/90398254427.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/aluminum_sheets_for_sale_philippines.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe27eedca7d4b5458259cff/t/5fe29cf862ead745737c8090/1608686841406/rack_and_pinion_gear_calculation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7d509de11a3bcb749b5f/t/5fdcc5e9bcde226dbcfeac50/1608304106741/full_website_offline_er.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/62718118791.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc115bd5e8e827d428ee316/t/5fc37561e18c5c478e67d016/1606645090058/georgia_le_carre_author.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e81bb2e29c7ba990a9c5/t/5fcc60c91e1a4d7de1216b85/1607229646144/download_gooz_io_mod.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffe9d5687f52b6b7c161f/t/5fc0ec57173fb5383bc35a55/1606478938107/introduction_to_robotics_niku.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/83406442147.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/gasokulovesudupopoxasad.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/acheson_report_recommendations.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/lusirabo.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/74430385231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfbe608-2e97-4596-883d-5892d7d2a08a/lunenburg_middle_school_staff.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_off0000e6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E6 5212 bytes
SHA-256: 3df5f6e20ca4e8dd71ac78f321066bf2e1295728ee9c7e08135bd9b756f5423b
font_01_sfnt_off0000f8ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AB 10484 bytes
SHA-256: 6984476fafca4c815ba69858b13718cb4690f34e9c35e29e627dd689182069ea

Open this report in the interactive analyzer, or submit your own file for analysis.