Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae46d06cc34303e…

MALICIOUS

PDF

45.2 KB Created: 2020-11-07 05:10:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1a855ecce29f0760d7c5b54c07d6691c SHA-1: e855d6591cc3d8e95f857e8f82b8dd7ead2aa7ff SHA-256: fae46d06cc34303e7df121a813d92b7ba91aa57fc11a76c4ca3a7a412a042392
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded URL, 'https://cctraff.ru/aws?keyword=color+of+clay+colored+stools', is the primary indicator of malicious intent. The document body appears to be corrupted or obfuscated, but the presence of the malicious URL strongly suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/aws?keyword=color+of+clay+colored+stools In PDF document text
    • https://kageketiwef.weebly.com/uploads/1/3/4/5/134581137/pusagi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/fizimobaruweboratiweti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba53d91-fb72-47df-9b70-d5ba8f087a66/icons_jdr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ead43f-2e07-4abe-8682-798db6462a3c/67243789619.pdfIn PDF document text
    • https://foxidusiv.files.wordpress.com/2020/11/gulapif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6418015-8958-4049-9a1b-a256a865a65f/tikodaxojoreke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37a3a1aa-fc03-464f-90d3-fa2d452e0027/94227696638.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://nijakinap.files.wordpress.com/2020/11/fujuxaduwel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3af18451-f9ed-4ce0-936b-11de14a8f8e4/mic_not_working_in_vrchat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d866e2-686b-49bc-b358-9e2efdf6ba2e/nv20_full_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bfeb46d-7b76-4d6b-b944-54523a4ba248/wididiribaj.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_off0000751f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751F 5020 bytes
SHA-256: 99eaab9221c5b247404a29a4c860de2ea5126590424411120dbef4971236749c
font_01_sfnt_off0000864c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864C 10076 bytes
SHA-256: 6cdd00ee056f0796a608d4fd77ef3cd9d54967a7cf7a5ce7b0d64e2fad98d840