Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ca1aea44cd8c93…

MALICIOUS

PDF

54.9 KB Created: 2020-11-07 19:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 18648fd17de0ac7362fba4c33cf4a326 SHA-1: a7e79d741f995a85d78502cd43bc11d7f3dc9f36 SHA-256: 80ca1aea44cd8c93f77fc9441ae00167a24dc3be2b85b56912ad7a585ec462f7
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://traffine.ru/123?keyword=gardenscapes+hacks+for+pc In PDF document text
    • https://rixutabenenik.weebly.com/uploads/1/3/4/4/134498467/02c5d8b534481b.pdfIn PDF document text
    • https://fazatirogefo.weebly.com/uploads/1/3/4/4/134462354/rubugilaziz.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/d4dd6e9489.pdfIn PDF document text
    • https://ziwarojuwetupo.weebly.com/uploads/1/3/4/3/134343479/potewidujipetopeki.pdfIn PDF document text
    • https://mudigaxufiwibu.weebly.com/uploads/1/3/4/6/134639529/kuzumofexonora.pdfIn PDF document text
    • https://tudasuli.weebly.com/uploads/1/3/4/4/134403402/ponizobitof.pdfIn PDF document text
    • https://gowosupene.weebly.com/uploads/1/3/4/4/134489802/6944f.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/355c76f303.pdfIn PDF document text
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/vediwabimi-mitetinokopejep-kuzepanofiti.pdfIn PDF document text
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/9692200.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/b8b92186-2f7f-4998-a118-30df58932366/perfectly_competitive_markets_are_characterized_by.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea157639-2c4f-4fc6-a4d1-2b0e84019448/41124868822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a525691-85ca-4846-be01-993e418c4c4c/luwasomefejafozagepigom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab7d2a3-ce81-4e4f-95e8-a85227eeb0b5/xugezomukavuzuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05d95e2f-a211-4fd7-804d-ba4be0276a3f/xuxofe.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/data_structures_and_algorithms_made_easy_python.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_off00009816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9816 5304 bytes
SHA-256: 0b65b9802b4d806de266cf89a924352d87b6aa33d9c41f63c4e829956f644396
font_01_sfnt_off0000aa21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA21 10632 bytes
SHA-256: 92992b113c23a96f9141d547ac92843ac8a3a17147a1ed00398ca483bb858ead

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