Malicious PDF — malware analysis report

Static analysis result for SHA-256 865242ee8012e871…

MALICIOUS

PDF

60.5 KB Created: 2020-10-12 02:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 544fb50dfe66c28f371aa37f99be1c90 SHA-1: 6f41592975fa3a50bfcfa3fee5b2c1b92715f888 SHA-256: 865242ee8012e87120637c1e4281cfcb927441780ea3a751242f6c6061662df2
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/pify?keyword=peliculas+de+china+zorrilla In PDF document text
    • http://files.emmabarnett.org/uploads/1/3/0/7/130739430/dugox-ranaba-paboxikediru-tupuvaba.pdfIn PDF document text
    • http://files.interiorsbyloredana.com/uploads/1/3/1/0/131070402/6706472.pdfIn PDF document text
    • http://gunetoz.exorcismdetailing.com/uploads/1/3/1/4/131453433/133e7364.pdfIn PDF document text
    • http://sodumanok.farmhandsquartet.com/uploads/1/3/0/8/130813848/vosipufugejiwenerej.pdfIn PDF document text
    • http://files.pnowebgap.com/uploads/1/3/1/3/131383771/946b619ccaa7ca7.pdfIn PDF document text
    • http://nejof.dmillsphotography.com/uploads/1/3/0/9/130969336/d86732a8dcd9.pdfIn PDF document text
    • http://files.diasandbias.com/uploads/1/3/2/7/132740978/lopuvapuj.pdfIn PDF document text
    • http://bafamenas.flexusdanceco.org/uploads/1/3/0/8/130873987/8732968.pdfIn PDF document text
    • http://files.peaknomads.co.uk/uploads/1/3/0/7/130738894/tonefifedojifaji.pdfIn PDF document text
    • http://kaveki.lafayetteorchestra.org/uploads/1/3/1/4/131436972/nogebumaxujasifi.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/c52d7c6e-e410-4169-b29d-90d59a6cb2ee/73172390515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4092de5-b706-418f-ac0e-f08d113209dc/gasinibisotatiberabiruji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c827bb4d-13c2-48ab-906e-8b85688b0ee5/1506213144.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_off0000ae4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4A 5080 bytes
SHA-256: b29eb29554968f9fca180d0c9d31efb00efdbc9cc10e29789bea2bfe3ec7e67f
font_01_sfnt_off0000bf7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7C 11096 bytes
SHA-256: 50605ea46f01201044f5b007a61188efc3934837fa8ccaa097c933fa5818b799