Malicious PDF — malware analysis report

Static analysis result for SHA-256 607a5e3ff9e8aaa4…

MALICIOUS

PDF

65.6 KB Created: 2020-11-26 04:25:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 500b9aad67bb1a0dd98aa5b07d43ace5 SHA-1: d8db047212f927b1e277a68888fff4d2a81de74b SHA-256: 607a5e3ff9e8aaa42dd2a5b0f2f59e6e43d733612fa8215e5faf8be7206d5244
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=animal+farm+audiobook+chapter+1 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d20a3f-7f91-4c59-81f3-cae98c3b7d3d/white_rotary_sewing_machine_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/859b2ce9-59b2-414f-949d-19baffb95c1f/54262407382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a56281-b075-46a1-a6cf-74457e59a59e/ruparimavetak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e0d22cf-d473-40b0-911d-6147fa1462ba/52216310995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eb9222c-3f6e-47f2-a4e6-779deead3a0f/61862513173.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/639dc36f-97e0-45c4-ba69-6c2e1fdbed99/61161580070.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/92309935170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b99c9764-3acc-4961-9b21-3af2206bba1f/65098928864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e0babc-8a86-4790-804a-312600d7c198/28850495414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d9c97a2-c82f-48be-bdf6-a4aec548745e/apocrypha_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b590f6f0-fe92-44eb-8b62-c71644e63547/19617904858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/056e31d3-7aec-495a-b9e9-37b7610959e9/16857646948.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_off0000c30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30E 5464 bytes
SHA-256: c3da88484d89919bfc8e4001f8b6f9165d9c4434fbfebe71b6420319906b8dfb
font_01_sfnt_off0000d576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD576 10764 bytes
SHA-256: ca8579a86f8280b97f1031bfebf1f15436423c4b434ffd45a900af2de04921e8