Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfe3b006d7d6f1b…

MALICIOUS

PDF

41.8 KB Created: 2020-10-11 08:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 21087ccdf9a2c8d441a9fdd2f7dfff82 SHA-1: b6e80317edc46127aee20edd5995b99b609e0b1d SHA-256: bcfe3b006d7d6f1b3d53f3baf1b52195ff1b2e1f5a15dd5ac63c59ba747d4943
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/strik?keyword=maravillosamente+imperfecto+escandalosamente+feliz+pdf+completo+gratis In PDF document text
    • http://files.desertjade68.com/uploads/1/3/2/3/132302876/pikesi.pdfIn PDF document text
    • http://files.i2slhoa.com/uploads/1/3/1/8/131872042/mosux.pdfIn PDF document text
    • http://files.artgoop.com/uploads/1/3/1/4/131483386/pedok.pdfIn PDF document text
    • https://site-1044259.mozfiles.com/files/1044259/pomevudenen.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/kevinepatejodera.pdfIn PDF document text
    • https://site-1039707.mozfiles.com/files/1039707/jipotefa.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/62230240261.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/1/0461/4245/5961/files/pevikinazulazakofafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ded474c-37b1-455f-bf75-fa1d215a8a2f/sitesokazuxoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bffdde23-1d53-4a3b-930c-4990ab0c7a24/1342656876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba63da9c-5c42-48f6-b0b0-f697620b070b/gilufakodafefemelalekab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b08c1124-e5e3-4417-a33e-eee9a061fc04/kugamusofowuzilux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a94cb3b-f04d-4b34-a342-09b0a275785c/42159399321.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_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 5592 bytes
SHA-256: 9e4b0be51b01066977b62d0074c8aaa0806708fadeb0f7624fe0c9442d49710a
font_01_sfnt_off0000731f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 11320 bytes
SHA-256: 3dbf1a97a557cdf4a21d2663b31948d3aeef8993b97af9d14a3bb6493639a0f4

Open this report in the interactive analyzer, or submit your own file for analysis.