Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f381643f509a0cc…

MALICIOUS

PDF

38.4 KB Created: 2020-10-15 03:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 35e686aa88c0efa94a9faee173ca0d85 SHA-1: bf2181aec60d06fd4cf36d36682863517ff36185 SHA-256: 0f381643f509a0cc0c847ca8e86918cb280dbb9a0579cc69f3d44aa66be411d9
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/strik?keyword=aaaai+abstract+submission+guidelines+2020 In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ramugimexixepaba.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/likanutavorolebonat.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/wuxuwalazifila.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/setolipojoronanavixo.pdfIn PDF document text
    • https://site-1040780.mozfiles.com/files/1040780/kinimitifapolivodakutera.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/83085028485.pdfIn PDF document text
    • https://site-1037824.mozfiles.com/files/1037824/risidukunugefejuji.pdfIn PDF document text
    • https://site-1038973.mozfiles.com/files/1038973/34094737850.pdfIn PDF document text
    • https://site-1039539.mozfiles.com/files/1039539/livit.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/lezukozikiwinenirib.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/9e84eb0bd5.pdfIn PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/xovilefuladoku.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/837046.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/9329271.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/1/0484/2435/3960/files/trust_deed_format_for_temple.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/53565238669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6652/files/35747567768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1910/7993/files/40286879616.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c543373b-beba-4850-84a4-5cf488e3a981/20784864238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026126bb-f42e-4d1c-9295-a37de8ba76d3/bebinebojitidesumezafipap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d7c1db8-3ec7-4d10-bb3a-b5a660aea14b/gifalilakojomedodipiga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef521d5a-63cf-4d00-9192-660d11559c22/kafasiwogit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e67c4f-f6ee-4b33-b38a-e348ca95e1bf/10116257720.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_off00005757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5757 5660 bytes
SHA-256: 54031adeb690cd7362be63333efbaf89bd98775eaa94b6fa213630969c38c7ad
font_01_sfnt_off00006a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 9704 bytes
SHA-256: 33ac8e13922f250764a5e4f630e41a8be35c8b36956563bca56cef10ff8ab5dd