Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce5cc365310afb9…

MALICIOUS

PDF

37.8 KB Created: 2020-10-20 16:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0c7fddb0f0ae527a5bd65dee74299d7a SHA-1: 23762e24af04101b4d10b6f23f130fde41811d08 SHA-256: 0ce5cc365310afb906733833e7ceb492ad36ee696423c50214c65a8b25222146
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://ttraff.link/pify?keyword=environmental+impact+assessment+vtu+notes+pdf In PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/nefewubomozimizo.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/2526976.pdfIn PDF document text
    • https://lebabipiw.weebly.com/uploads/1/3/0/9/130968925/2175866.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/4219926.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/kagibaja.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/badunamuj-zugisip-jopuxinunejid-regufaxid.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/e9529680330d.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/zejobofo.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/vesegitarifumo.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/livetusova.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/6354310.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/xekukuw-forolopofezej-latiwigekiz-parapevu.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/6f001abef.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/3787719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c2867a07-c9d6-4fea-b0a8-47d50f11d43a/pexut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe0fe4c4-08e8-47c2-8b14-2bf141926573/xowusiwafolafegisexawexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20fc04e1-b934-4132-aad9-012e570cdf1b/71351588026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47d2d305-a55f-453d-b1e0-601774a97552/62771357512.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BE 5200 bytes
SHA-256: f53b23be62932620c4371b0fa7c3a9fa482c1a6280c210b444b450d5c687f8e7
font_01_sfnt_off00005a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4B 9832 bytes
SHA-256: 26d3e029dfd3f3680cda3950f428b83c889dc9484acb375a563226108b948fbf
font_02_sfnt_off00007bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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