Malicious PDF — malware analysis report

Static analysis result for SHA-256 029c454e6cc3a251…

MALICIOUS

PDF

42.3 KB Created: 2020-11-08 11:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8b807e9edf9a8e806d9c7728d1754893 SHA-1: 457fb271a73c9d53234a73bfdbfe9d3a13ad66f0 SHA-256: 029c454e6cc3a251a485019f4a045ce135fdbe09a335fd19b484ef1756059f55
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/aws?keyword=desert+recluse+bite In PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/xepop_zulajado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450511/normal_5fa26b0cb11a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_5fa0a5018671b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8a338fb4fbb.pdfIn PDF document text
    • https://lisilabonefep.weebly.com/uploads/1/3/4/5/134527166/2745749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f8b6aa448da1.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/jokozarido.pdfIn PDF document text
    • https://gefedotozowane.weebly.com/uploads/1/3/4/3/134395864/6128785.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://rezekine.files.wordpress.com/2020/11/tatojesanawav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab2d3eae-8bfd-457f-a2d4-4896d04b7169/kovuluva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7b4254-6b1f-48ac-bea8-c63c9c8f5264/27597749910.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC7 4388 bytes
SHA-256: fe64d4958aa63cb573e98b7e0c6d8605d69decfec6b2a3b81201490bd08ad809
font_01_sfnt_off00006ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC6 10500 bytes
SHA-256: 65bad7ec59a4e97cdc860d00dd255ae9c86a51107c69c56ce67d6dc6de39c63d
font_02_sfnt_off00008ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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