Malicious PDF — malware analysis report

Static analysis result for SHA-256 610e280cef650718…

MALICIOUS

PDF

39.7 KB Created: 2020-11-01 16:34:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 00fead0197d26b979b19b96864a11890 SHA-1: 2ea4fe1eb3bf28acc4e0a68f21a5788ce913f44e SHA-256: 610e280cef65071847b5904db9ba667e0c711805505e872a4508d833ddd56f1b
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?keyword=chemical+reactions+crossword+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f935a374a8af.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/b069121c-e642-41e9-99d0-2ecb6ac5315d/kaxalominobili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeeaecc4-8ccb-414b-bc6c-a2ab1153c610/99690233211.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/xisitudodamonanomidome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4784/8602/files/ruxiwojemoraronunik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c52f88e4-5ce4-49d8-a549-7b6c0d68c0a1/xazetezisur.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/35450716466.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/keregopububot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9560a15e-8ff6-4933-ab4f-ab577e070f23/luduwumuvixigejif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66c0a68f-ddc1-437a-ab6f-e0fb52db69de/pidezukokimok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8941/8136/files/ro_thief_leveling_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/778ac600-2878-41ba-9ade-9904f2d8ef46/mafer.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_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 5176 bytes
SHA-256: 230c33850234156066f620ab7f0cbfad26e32838c745345342c1e6725f90a173
font_01_sfnt_off000071e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 9560 bytes
SHA-256: 78a754451c33a6ee28725e655418a31ae5f4e69b0e4b2c88f8d34bd06bcba60f