Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e4c69822079360…

MALICIOUS

PDF

41.5 KB Created: 2020-11-03 02:45:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e5075f88118ad106e4b828e794ed394b SHA-1: 10877807f4c0b90dd6001784cb53b4e6fd5a91d6 SHA-256: 70e4c6982207936073912e74304690d4700e5fe9843df5d22e124a5c302b5f8a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate a link farm designed to direct users to potentially harmful content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=monument+14+savage+drift+pdf In PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://razisosip.weebly.com/uploads/1/3/0/7/130739291/2959586.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.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/38c31d89-678f-440d-9ca3-9798257518cf/gta_vice_city_polis_modu.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/xegejezotekaguf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ecea7b-0fc0-42f5-8d1f-ac6402f30614/46881829362.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/15408911481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25d1f258-a3ae-4467-bf9d-8a1f72b435a3/nimijitiguramozesixomav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943c40a2-e8c7-4355-a785-34f15f224bc4/kotoxabef.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/tovosokevimigemomizapas.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/turivizizowevuniremim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0427/8935/files/wizuzejufolepamukewu.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_off000061d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 5532 bytes
SHA-256: 4ddbd984950f7e555a0502df26e007f4f7a23221f564c07358ca1f929dfa769f
font_01_sfnt_off000074b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B0 10868 bytes
SHA-256: 8f632c72ec5189af5c0f7e1eec7d7a58d91926bf88e149f50ad8f46ab618d3eb

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