Malicious PDF — malware analysis report

Static analysis result for SHA-256 3330e5a1ecc221a2…

MALICIOUS

PDF

55.2 KB Created: 2020-10-15 09:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2a9724198334a7e031132d09f1e02e69 SHA-1: 57e55fc1c83a309c9198331952e48d97b100aa43 SHA-256: 3330e5a1ecc221a2b0ad1b88037c810dfdaa005ba2e550fd5c1aff28e6638145
124 Risk Score

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 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://cctraff.ru/pify?keyword=exercice+intervalle+de+fluctuation+seconde+pdf In PDF document text
    • https://site-1037890.mozfiles.com/files/1037890/lisanevafokok.pdfIn PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/rikoxejezo.pdfIn PDF document text
    • https://site-1039222.mozfiles.com/files/1039222/zixamofivalonalifosu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f87bdce97a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8714fec4854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f87d9e2946b0.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/vutax.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8f24ebaa3f201f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f877011ce53d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8780ff0abcf.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/c95f1cc7-5f7a-4d67-9bc7-af1d55443895/33979779988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f0edd5-c72d-441a-b456-c1cc3dd161f3/juwoxirizikufowokoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140a0381-58ac-449d-9177-27b8f2acec56/31390626390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3113f61b-28b3-4a74-8942-6ec28a2d3a55/namesodagemadak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f75eca4-3830-4038-bd0a-b5e2b225dfa6/kifovobakoxugidurasezaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0094/7103/files/kamasutra_book_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4231/5669/files/leonardo_plaza_jerusalem_restaurant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/batugolij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8671/2484/files/naduluferogaregu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 5236 bytes
SHA-256: f0f6a3af85975ffeb64ed83636d3dd2988540f749860d2ca2e911be227d521ca
font_01_sfnt_off00007e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E24 19360 bytes
SHA-256: c60e42062f9858d4b0e0cd2c19b17c434c3fd4ed61935d3f81abdc69e415d7fb
font_02_sfnt_off0000b751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB751 16320 bytes
SHA-256: c80f6794c57b71bd4d4eef4a3b3383f2b43afba92ea52ca1b4138e4399802e65

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