Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b64cead3cd1e38…

MALICIOUS

PDF

57.5 KB Created: 2020-10-20 10:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e9a75ce8b2905e5f439b56f7f16b3f2b SHA-1: dc067dfde58e29ed33fc7284dca8d192ac1d60f6 SHA-256: f5b64cead3cd1e38338aabb11178e6f44018fd7ad60655bc2b535d93b04542d7
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://ttraff.ru/pify?keyword=%25D0%25B1%25D0%25B5%25D1%2580%25D0%25B4%25D1%258F%25D0%25B5%25D0%25B2+%25D1%2581%25D0%25BC%25D1%258B%25D1%2581%25D0%25BB+%25D0%25B8%25D1%2581%25D1%2582%25D0%25BE%25D1%2580%25D0%25B8%25D0%25B8+pdf In PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5544981.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/9584872.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/783f24d1.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/17f527.pdfIn PDF document text
    • https://jazexupojofon.weebly.com/uploads/1/3/1/4/131409098/f54668ef5.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/d51f2446ddddd6e.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/6011874.pdfIn PDF document text
    • https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/61eac4b485b26.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/032c51c04eee.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/sumaxika.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/guwen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8a0ad731b40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_5f8b5121103c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1d0df7e2-a028-44c1-a6fc-10b6e4834de3/10581629912.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1b09433-715b-4832-bc49-294e97114f84/83862702530.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBE 5048 bytes
SHA-256: 1d80d7499554599dc68b2bec13a9f528f2e691cd8556fb742611ced06c80fb98
font_01_sfnt_off00007dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 8328 bytes
SHA-256: 95cf6dc33159b9f200ffa3a61cd53ad1084e0d6f43ea3cc193aa51a0d23b52da
font_02_sfnt_off00009861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9861 15644 bytes
SHA-256: 0e025e286f454f662eeba021d19e6619cfe1dd875804e8bbd4143b3bc63a03d6
font_03_sfnt_off0000c854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC854 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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