Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c6d4d6fdcea1fd…

MALICIOUS

PDF

74.4 KB Created: 2020-11-17 21:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 12b0bcea56e07d7990c7f7f8bfb88d98 SHA-1: dd7ae0bff64dbbee3a6b85d7963254fb3b8d3e4f SHA-256: 52c6d4d6fdcea1fd2b59312361da350529aa2f29c75b60e0596f9873f5ce171b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafftec.ru/strik?utm_term=gta+4+parachute+controls+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5f8daf081ad24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_5fa343cb4cb6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386824/normal_5f94bf2b43b1a.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/46c290cb-2196-45f6-9a6a-83857e1f014d/muvaxun.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/297118785.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/diy_hemp_necklace_closure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39eec1f4-5fef-40b1-8204-046a064d8da4/ls_league_twitter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0954719-0657-4fc3-8f38-120decfb4aa9/lorekowafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921007b4-ed84-471d-a98e-e21bca631b40/estudios_biblicos_para_jovenes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29020c1e-e5cb-46f2-a753-c0561e119f38/poochplanet_dog_bed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb741092-71f1-41a8-9efb-863a3453cbf5/the_paleo_answer_by_loren_cordain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6bbb28c-9232-42f5-97ab-82f0ce56f32a/bokomakebudojez.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_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 5140 bytes
SHA-256: ca983fb996610f6aba2b48cd19cf150283ed300462199153726365cf62fa0446
font_01_sfnt_off0000f62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62D 11328 bytes
SHA-256: fa741af36b64cf6e26d66f6b919ad995b03d1aba114a3ef327b90224285b42bb