Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4dd33223d97c51…

MALICIOUS

PDF

67.6 KB Created: 2020-10-08 08:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 221a99ad5eebd1f85ed29b25d3a33233 SHA-1: ebc6cba6a0c23485b4010f70ccceffbaab0019a8 SHA-256: 5b4dd33223d97c5191f200c438faf0b46f542ddcd4d3cd4eeae145c90ea91209
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=the+secret+world+legends+factions In PDF document text
    • http://vegin.priscillecanivet.com/uploads/1/3/0/7/130739385/5570aad.pdfIn PDF document text
    • http://sokofavur.550westadams.com/uploads/1/3/0/7/130739978/d6c50ff492.pdfIn PDF document text
    • http://files.authenticmemories.com/uploads/1/3/1/4/131438228/puzebiwojikope.pdfIn PDF document text
    • http://files.truefertilitysc.com/uploads/1/3/1/4/131407148/6fc1a7.pdfIn PDF document text
    • http://mizejo.estellejorgensen.com/uploads/1/3/0/7/130738955/8a6c5dae5bd.pdfIn PDF document text
    • http://zunomito.bluemountainfarms.net/uploads/1/3/1/3/131398274/3203508.pdfIn PDF document text
    • http://files.m2students.net/uploads/1/3/1/1/131163738/9194966.pdfIn PDF document text
    • http://files.tracywandling.com/uploads/1/3/1/4/131437849/1ae7476ee517c.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/9a5677ef-30f2-48e7-b92f-6a19fd91f298/feluwud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6616173-a6e8-4b5c-9a53-b2eca83c8f04/6984279096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0741458d-883d-48c5-aee1-1504db31bbd9/fotiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f19cd5-2b71-407c-8275-b7b17c14077e/jibupugederubotusofas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a7c11e9-827b-4e1e-8f74-fc17d77c8d1d/76326685356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2adb7a-a1b8-4ba1-8f7d-ce943cfb1c9c/nelisaresevemitufugatadag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e5b97b-dcc3-482e-a14c-82b60f32441b/36913952431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7600519a-bb39-4ec0-a897-d00beb4fb9b1/zusuwibatulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bb2579d-d1b6-47e5-b544-73977c3484cd/renipuz.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_off0000ca8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA8F 5324 bytes
SHA-256: 33d07bf00dd5e88990b091d518ca4da6971258a5dbedf669c56d5389756fed73
font_01_sfnt_off0000dcb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB8 10740 bytes
SHA-256: f08e297ffe3e1430f5456c530f28dca1f0db1f0f92363a4e4080581900c36174

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