Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab81e7d28990ba2…

MALICIOUS

PDF

34.7 KB Created: 2020-11-08 08:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 97e628b23df99f204f19c6a1c5e6ef46 SHA-1: d72846b01a6464f5e7e2da304257de5222d67ee9 SHA-256: 1ab81e7d28990ba2e809cd1d0efa46d03215b90235f9929cdd8ae86cc9b87330
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://trafffi.ru/123?keyword=fantasy+nails+carson+ca PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fa3654353932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383925/normal_5f9c825618057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5f9a87f312203.pdfIn PDF document text
    • https://gogesatita.weebly.com/uploads/1/3/4/3/134321397/sulobakoz.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/mijedusovineti/rocket_propulsion_elements_ninth_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/103def9e-1101-44ea-8d9d-9370ee2cd23c/xemomova.pdfIn PDF document text
    • https://mebufaxokone.files.wordpress.com/2020/11/lavetiki.pdfIn PDF document text
    • https://zejiwes.files.wordpress.com/2020/11/13956532288.pdfIn PDF document text
    • https://kezujex.files.wordpress.com/2020/11/manual_fan_speed_control.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/bankers_adda_english_quiz.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/dabemajarerefek.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/28158469636.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/99064520557.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e109b8b8-175a-44e6-8fe6-834ecf72cd99/buwazu.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_off00004a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A61 4852 bytes
SHA-256: f7b85f1af4fa77aa22b724353144d1f4811e50ba59f67038e9b463641c26271e
font_01_sfnt_off00005af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF8 10644 bytes
SHA-256: 4c4a4659ad31cf78be5acef26b9ca262bf83192e18f2bcadce2a166fdb5d7d07