Malicious PDF — malware analysis report

Static analysis result for SHA-256 780b834ee755e015…

MALICIOUS

PDF

48.0 KB Created: 2020-10-29 02:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0a87f567b947f4acf64f57815fd8c63e SHA-1: b5148ad825420cc4b5763bcaf6feea51c96d5116 SHA-256: 780b834ee755e0155fa2015a278753cadd2d36e55fddd08da8a9475a2be94952
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://cctraff.ru/123?keyword=joint+defense+agreement+new+york+sample In PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/xaxepeson.pdfIn PDF document text
    • https://xinusikavafomi.weebly.com/uploads/1/3/4/3/134353784/lagejagujizulipipeb.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/630bbe.pdfIn PDF document text
    • https://velebipuzufal.weebly.com/uploads/1/3/4/4/134434208/2526807.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/wisariwopa.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/29e2ac3.pdfIn PDF document text
    • https://nimewoguvinu.weebly.com/uploads/1/3/4/4/134433183/fedaruxenuguf.pdfIn PDF document text
    • https://dosedoduni.weebly.com/uploads/1/3/4/3/134347632/45e5213dbceb.pdfIn PDF document text
    • https://sunawakajisume.weebly.com/uploads/1/3/4/3/134324988/f2b677a.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/f33799e532.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007bfb.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007bfb.bin)
    • https://cdn.shopify.com/s/files/1/0484/5423/8369/files/21555673436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7366bf3d-c2d1-4545-8667-00762baf9dcd/beduki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2451/7790/files/capulets_and_montagues_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3406/6075/files/bowman_2_unblocked_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2737c536-997f-4bef-b837-3dc174975b36/66195160840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2498/5497/files/wow_3.3.5_assassination_rogue_pvp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/all_county_orchestra_westchester.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/050ba373-d12d-41b5-a2fc-51b2258a2a68/wevunuda.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/bovosibodokuwube.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/79253908369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/010847ce-59ea-47f5-918b-8579df683e6c/gopoxezumofiwigaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7947da8-a766-4ed6-8327-2f1ca3aadf54/first_principles_of_instruction_merrill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5277322-40f1-4524-a4c9-a03caf17dfd4/nefodajef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/9707/7925/files/fizika_10_klasei_vadovelis.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 extracted file (font_00_sfnt_off00007bfb.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFB 5608 bytes
SHA-256: 15873cc6d54abb81146d4215fa9c51fcee9663dd880459477a10f26ade99b23c
font_01_sfnt_off00008f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F17 10256 bytes
SHA-256: 0f79bb9b28e2e3c2e162a153a88b38479d7208f9b5b6affecc2e1821fba9cc91