Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa9b20edff6aa40…

MALICIOUS

PDF

44.6 KB Created: 2020-11-06 18:31:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1ee5e243d85bc71e6e61b6aaa4366ab6 SHA-1: 7676f213f2205ce78089b1919f0e4af6a1be0985 SHA-256: aaa9b20edff6aa405863dd8fb2dd924a6a2ad71ba5d87bb2e00e3a0861b01d60
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?keyword=nfl+redzone+stream+buffstream+reddit PDF link annotation
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/deviwokenel.pdfIn PDF document text
    • https://lugafowak.weebly.com/uploads/1/3/4/6/134647172/wepatedon_wujopalajowef_luduzufobapofe.pdfIn PDF document text
    • https://wusinetowaje.weebly.com/uploads/1/3/4/4/134471696/jozuvuduvoja-tanoposuredirug-xiruloruvixatu-rofubazo.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/a0abbb0a8.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/9bc4de.pdfIn PDF document text
    • https://feloxoxux.weebly.com/uploads/1/3/4/0/134000485/dezepasomup-jokewagufedo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/14307131961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/026b3ae8-149e-41ac-a642-73ebab46c82b/14496090849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aca4a11-d206-4243-90d3-b964e4e75877/tosuzenarevapasosazidoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7326de7-2860-40f7-9c17-6089154811fb/cast_fossil_copy.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/facts_about_nevada_state_seal.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/ariana_grande_st_louis.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_off00006e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5212 bytes
SHA-256: b13eab3d75a34100fb41cf858ec6e76238d151acb18b14fd783f3643971fd367
font_01_sfnt_off00007fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB1 11080 bytes
SHA-256: 6de2b402a2aa85781a303efa39ff971b5cf08f8cb4658c190cebc692d2ab4cb6