Malicious PDF — malware analysis report

Static analysis result for SHA-256 cca12bf8d0bf533a…

MALICIOUS

PDF

38.1 KB Created: 2020-10-15 22:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 83c42e6c507ebe2fd115842ea47bad77 SHA-1: fd20cc8615d1011a7899bd493dc64a8bbe724990 SHA-256: cca12bf8d0bf533a66395c6a8b1059d017f925304d89b7d7b50787b4492f7576
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://gettraff.ru/123?keyword=manitowoc+ice+machine+model+b400+manual In PDF document text
    • https://site-1039707.mozfiles.com/files/1039707/20879459737.pdfIn PDF document text
    • https://site-1036791.mozfiles.com/files/1036791/vobipozorovigitadenabat.pdfIn PDF document text
    • https://site-1043842.mozfiles.com/files/1043842/73440335744.pdfIn PDF document text
    • https://site-1040000.mozfiles.com/files/1040000/xasimavafa.pdfIn PDF document text
    • https://site-1036821.mozfiles.com/files/1036821/simopo.pdfIn PDF document text
    • https://nubojubixuxo.weebly.com/uploads/1/3/1/4/131410311/fuxavukosi_fuvexajil.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/87a3a3e4.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/2f282aa5a56.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/tigosorivibisakoxu.pdfIn PDF document text
    • https://buxivadoga.weebly.com/uploads/1/3/0/7/130740323/e8f84e3.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/439493.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/824ea4b.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/d8a1fcb.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/risujinenabus-zudomosimoko-nesexob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f86f5e4e6920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f888245ba51e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f87cbf019cd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f88311840dc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/pibulosot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2240/3742/files/88691528403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/whole_dog_journal_food_list_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6938/1539/files/rebedor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472534c3-9a4d-44f4-ab09-62f4b5e1a0b8/remeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08c082f4-e553-4067-a3b3-2a3b3cd2b14c/jopifewukexaxodesividedo.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_off000053a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A5 5372 bytes
SHA-256: d146af53dd90a1445afd8867529e45188374141759256afa2e0160dbe96a79cb
font_01_sfnt_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 11452 bytes
SHA-256: 5ba22e0fe470079db897e9fdc91e1755c8e136f32a6d85c7b1a5495ad4cc1a0f