Malicious PDF — malware analysis report

Static analysis result for SHA-256 de7f8d9d413675d7…

MALICIOUS

PDF

63.2 KB Created: 2020-11-02 19:00:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 93bd27c93cfe8f19a85873ec55914614 SHA-1: 9b7c35a3246c71820686d88e7196a2eee6dbb15c SHA-256: de7f8d9d413675d77de940c6c8422bfde52d46fe224da5be5a0e30eff36aeaa1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, a significant portion of which point to potentially malicious redirectors. The embedded URL 'https://ttraff.ru/123?keyword=neverwinter+guide+ps4' is flagged as a known malicious redirector. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine results or to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.ru/123?keyword=neverwinter+guide+ps4 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f8a05ac9a43a.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/zirojopemup/3485492418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ed04936-de7c-43e5-9b10-b6be69315099/jubasapi.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/higiene_articular_de_hombro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50084a7-9093-4f69-849d-39d9fff60af6/xumiboraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9129/1048/files/tosuxeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0680/7192/files/rafutin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ca1a536-64b1-4f2b-8f56-be48309c916a/goodman_and_gilman_pharmacological_b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14802f07-4349-4946-8b4b-33f3f69ae267/12799613523.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wexofokotilaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3f6d28-12d9-429e-9527-c9ebeee86afb/a_conflict_of_visions_epub.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_off0000b94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB94F 5096 bytes
SHA-256: 1be456f1fca7b4e0288040ba54aef72cf0eaf087bd31b683a873dd1712829575
font_01_sfnt_off0000cadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADB 11112 bytes
SHA-256: 8fa22edddfa067dc8012453de5f58b79c7b974f4922f2694ffd1cc80d8be122d

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