Malicious PDF — malware analysis report

Static analysis result for SHA-256 3896a19d07a67d37…

MALICIOUS

PDF

41.5 KB Created: 2020-11-07 00:34:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 0f5521a4f33afa74454e4e7fbbbfd971 SHA-1: 5922f9a0ec09bdb430c50ae1bc34c400f5ded165 SHA-256: 3896a19d07a67d37b5a70f5a80299c77264cb4c10cf9cf07da261b4c5f59c223
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://traffking.ru/aws?keyword=slimquick+keto+powder In PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/vupibodetebajom.pdfIn PDF document text
    • https://vufizebogizej.weebly.com/uploads/1/3/4/6/134601336/1140378.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/5486879.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/179d6990-62d8-4429-89a5-52cd57b6ca6a/malixadid.pdfIn PDF document text
    • https://ferinojonaza.files.wordpress.com/2020/11/70601037384.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://dututired.files.wordpress.com/2020/11/20743606408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/369e57cf-b925-4718-a099-dec93df28272/nonlinguistic_representation_examples.pdfIn PDF document text
    • https://xelinatuki.files.wordpress.com/2020/11/12873235441.pdfIn PDF document text
    • https://rovamidenube.files.wordpress.com/2020/11/manual_de_servicio_toyota_tercel_1993.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9b1df8-18b9-412d-971f-bde83ac80307/yahoo_mail_password_helper_tool.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/765cbaa3-4661-437f-b30f-2ad55cdcd6cd/vemun.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_off00006279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6279 5216 bytes
SHA-256: a2c2fa9420a6323caf826bafd929b041b106a15ad4070ca5cfc5bfabad97eaf7
font_01_sfnt_off00007438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 10540 bytes
SHA-256: 34a664eb4a255e73ceadca16131f7e6aaaf1d98a35b74604abe10a7bfde8e437