Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea20dab4f8c88dfc…

MALICIOUS

PDF

43.1 KB Created: 2020-10-16 06:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3c15e606d207da736321678cb09f1474 SHA-1: 5313ab421776e533876d1012ab64d251c7fe6240 SHA-256: ea20dab4f8c88dfc3917c63666d5cf54c488d43a84513b7a47916536205c626a
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ggtraff.ru/123?keyword=come+posso+modificare+un+pdf+protetto In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368494/normal_5f88db9d5d2d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f86fc104b2c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f871fd5b5170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f8815bb3a8ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f8770fd24acc.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/kufojufezowu.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/mujux.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/cf87370e8e.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/1039640.pdfIn PDF document text
    • https://site-1038830.mozfiles.com/files/1038830/7664008335.pdfIn PDF document text
    • https://site-1043123.mozfiles.com/files/1043123/sazumubaze.pdfIn PDF document text
    • https://site-1043447.mozfiles.com/files/1043447/pavebupid.pdfIn PDF document text
    • https://site-1042539.mozfiles.com/files/1042539/87099022195.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/vixuvoji_befesugolafet.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/tatowepefulib-nomefib.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/mukej-jepefalolamux-vuxevine.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/gowijipomunolu_lirogub_loletakimup_rozugofekowe.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/566d6507-2e6d-43e9-a6ea-7b186483cbed/94353721841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/589d6497-6dc2-47bf-a5c7-97f6a9d98bb6/43524790233.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5b79112-288d-4dc2-a61a-c181c2300df2/vopijimusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cc2c5e-d370-457c-b0b4-f4c67f8525f7/76117797453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9130c9-9c9e-4ca7-b906-cb6977f86b81/4330103526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3180/9176/files/sadafuwujules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2016/7586/files/kitchenaid_refrigerator_manual_krff507ess01.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6823/5162/files/rikuxusez.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_off000067fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FC 5172 bytes
SHA-256: 8225727134758541ea0e3f7f6f24c3cc10a11a61db7e4bbbbc166405ec93fd8f
font_01_sfnt_off00007975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7975 11064 bytes
SHA-256: fa171f0032e59d9b3e4f637e0a95f24c938c6e8db9757fe653419850d7dd3ecf