Malicious PDF — malware analysis report

Static analysis result for SHA-256 143f7485c3b36fa9…

MALICIOUS

PDF

68.0 KB Created: 2020-10-14 08:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 80ef214f1dfefcc150113b08a99c618f SHA-1: 2ecd3775123437a1aac072f90c546255bbba1385 SHA-256: 143f7485c3b36fa9b7f10a6fb76bdf695e0e806f986ab4773826c1b261a9352f
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/strik?keyword=age+of+empires+castle+siege+android+requirements In PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/7922058.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.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/d3feb556-fedb-4e0a-ac92-3b8b9e063694/fapixozaluzojajesesituj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365394c8-a3a8-4007-9597-b33320c586c4/38305757558.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53257944-9ac6-4f29-98b5-fe9a61e4035d/10505465634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f552179-e2ee-43c7-98e5-2dccf6c7dd3a/7160938613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63213edd-500f-4ae1-b028-79b3932cae99/zotetoniruga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2866d635-eca0-46f5-abde-4f7ccafda48c/54530570392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a32e67e1-fcc5-45bd-8450-cbab884664f4/97692513296.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_off0000cc34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC34 5588 bytes
SHA-256: f98c0e7ded6e94d0de752dd19669cfd0a55dc5f261df14414d558ef0396695e7
font_01_sfnt_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 10496 bytes
SHA-256: 12f8dfb15ff7d766bbfa91c15de82ab60bc005648648a1d9f037a8b502ea4fc1

Open this report in the interactive analyzer, or submit your own file for analysis.