Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1f56de202ba6f4…

MALICIOUS

PDF

51.7 KB Created: 2020-11-07 01:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3481ea99019c03c24696f8cf1c9bfeb3 SHA-1: 972cfdc04768d9b64898bbdd1e7bc0b90f4f10e3 SHA-256: 6f1f56de202ba6f44eb700913aa15e1d95755699c9f722612f2ca2b08f649994
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic indicating a lure to execute commands via the clipboard, suggesting an attempt to trick the user into running malicious code. The embedded URL, https://traffnew.ru/123?keyword=jesse+tucker+arlington+tx, is likely part of the payload delivery chain. While no scripts were directly extracted, the ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to exploit user interaction for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://traffnew.ru/123?keyword=jesse+tucker+arlington+tx PDF link annotation
    • https://fojanatixisi.weebly.com/uploads/1/3/4/2/134265346/3940862.pdfIn PDF document text
    • https://rixokofumi.weebly.com/uploads/1/3/1/3/131380985/duzof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f925b2fcc49b.pdfIn PDF document text
    • https://munevamowiwefan.weebly.com/uploads/1/3/4/4/134440094/4709708.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_5f90ab4cc31fd.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/713cbce3-0fce-48a1-90a1-7b4807dbf5a6/dajizole.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/article_370_of_indian_constitution_in_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/158f48c6-c317-4447-9bb9-f4314cf77973/maxitesunaz.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/79613501303.pdfIn PDF document text
    • https://s3.amazonaws.com/bikebuduvud/minecraft_free_no_downloads_online_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/21754207146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5701792c-a365-477d-a144-a3cfc836fe3f/chat_bypass_roblox_script_2020_pastebin.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_off00008cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDD 5088 bytes
SHA-256: ce4d0e3998b3772bb3b69dbf69868a6be65107697a59c951d4c499428c3d50d7
font_01_sfnt_off00009e42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E42 10656 bytes
SHA-256: b8c22d488a2797b36d00a9c4b72f8a6a4c5d00bfdcb73b8d4c6ee03debbdba35