Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d1ee4489993cf5…

MALICIOUS

PDF

38.6 KB Created: 2020-10-17 00:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0a6807db54daa73984701462c2b3304c SHA-1: 157d1e74e26875944ec3a3bcb6adc35dc96b85ff SHA-256: 17d1ee4489993cf5e606453e044e9b843bd008849ff05966d8e19acc4235ff78
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://cctraff.ru/strik?keyword=coat+of+arms+rubric In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f872b4e33181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f8746701b710.pdfIn PDF document text
    • https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/6f1312eddc822a.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/nesubine.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/gojagativite.pdfIn PDF document text
    • https://raxiruzaxulam.weebly.com/uploads/1/3/0/7/130738564/lenurexanugelex.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/0399a0a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/44aed1c1-fb7a-4ed3-ae41-19a5fd3e88bc/wadug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb2cff7b-49dc-40d8-82df-7a3b8eb0f3a1/41855269862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e85b6471-5d94-4a08-9df3-ae69d96d3966/fotokeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b20e89b5-2952-404b-9a88-a72f6f7d72d8/pipolerelulug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0661e2c-1ea1-44a1-ba96-59fc2d3380b5/87863844428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d053bdc-014a-496c-aa2f-27b726eb9d81/zadobelununo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21078366-1cb6-4da2-a858-2b19759848e5/nudavolobevavamenekokan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bab661b7-dc13-40ad-8ac1-98392e6068b3/vupokijazezenogerij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903d2147-d9a4-40e9-84a3-063e765b643e/ruzanedanezurukot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e77d2a5-049e-401f-a18b-53f8a8b0b648/77282270938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daa93d57-8ae7-40db-851a-296b29b9ae87/bblia_de_estudo_herana_reformada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1784/2073/files/nilebux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2720/9629/files/spring_bonnie_fnaf_ar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7374/4277/files/84508815067.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE0 4816 bytes
SHA-256: 7a434209ef17b7fef2eef782eba71fe624d53462845db7e8b65727a330b9f6d9
font_01_sfnt_off00005c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C43 9884 bytes
SHA-256: 719d400b66981e18f79ab3f649150b887399e7a97fbb8201f7b1913b2ba0c863
font_02_sfnt_off00007dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2