Malicious PDF — malware analysis report

Static analysis result for SHA-256 94edb1c813113b57…

MALICIOUS

PDF

53.8 KB Created: 2020-10-26 19:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: e05abd470f8e015a810ba00be621854c SHA-1: 2360e039031f733b0ee9e420f1289ebe410accca SHA-256: 94edb1c813113b57b319a6a188795a6400b3921ee2439d1bfeda2226539bc312
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.me/123?keyword=herbalife+ultimate+program+instructions In PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/79c608520.pdfIn PDF document text
    • https://mogawurid.weebly.com/uploads/1/3/4/0/134042680/1b46f7c7.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/4329486.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/radenaguborasikaneko.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/xubuxikigini.pdfIn PDF document text
    • https://dotigima.weebly.com/uploads/1/3/4/4/134404546/fotut_madederelaf_vawuzugog_palikumim.pdfIn PDF document text
    • https://murenazomof.weebly.com/uploads/1/3/4/0/134012525/zokire-barisido-rodukap-zafumexugidido.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5f8bca2d818da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f8bd1895973a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5f91130335c92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_5f95c32b5e52f.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/b28ddacd-9ec1-461c-aec1-ed15d8cbe33c/litamawosadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64e4d74b-bc8e-4cf9-8903-055472e10818/zubesutinenoxomasigof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c48be0a-cc75-4f3b-9097-8446dded4af2/28827166485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87950d21-3388-4f64-8baa-0d35a6d6ce7d/43187561431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156c9b93-416e-409f-8fd3-a6b085322d76/lerukereteneza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0575/8621/files/8042989212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7286/3399/files/cricket_19_apk_download_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0241/0654/files/judge_mathis_wife_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84c01d4-50c7-4458-a9dd-dd9c5a744f55/60234424886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9efbae77-84f5-48d5-a473-e61dc282117b/certificate_of_completion_template_f.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7036 2888 bytes
SHA-256: b6395d1dae2d22b85f09da846ae46dbed05fbf71697383e3f41d9dc35d58a2e7
font_01_sfnt_off00007a80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A80 5436 bytes
SHA-256: 6aba0bc045a2a38b7fe409c37ce9355916f11ac152a3eb1cebef3fcf091fede1
font_02_sfnt_off00008cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDE 11264 bytes
SHA-256: 9d5d6ca5b8436468f38b3728d51b429bd82a4a8ce544c8af114c3f1f1c46401b
font_03_sfnt_off0000b3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B3 16232 bytes
SHA-256: 1aae99b2d46d5091b081b5d8451ee608d9d3373a6c336bf00f14641161edfe42