Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd00c036e6b0f7e…

MALICIOUS

PDF

41.2 KB Created: 2020-10-03 00:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 39a3e46acd465b3e033ff0f058498fe6 SHA-1: 3c5f02a49b1323656b96f054a75568682c68de65 SHA-256: 2fd00c036e6b0f7eabd18add20239043a0486ab59b0d7b30f5fd324eedf87e08
124 Risk Score

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 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=classical+sociological+theory+a+reader+pdf In PDF document text
    • https://site-1039745.mozfiles.com/files/1039745/rivejeragerozoduvobuzus.pdfIn PDF document text
    • https://site-1040677.mozfiles.com/files/1040677/zezapiwudi.pdfIn PDF document text
    • https://site-1037160.mozfiles.com/files/1037160/pokipitamadanawasulodu.pdfIn PDF document text
    • https://site-1038339.mozfiles.com/files/1038339/66893894044.pdfIn PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/87925926266.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/tilagesomuregivog.pdfIn PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/39947058476.pdfIn PDF document text
    • https://site-1036696.mozfiles.com/files/1036696/wabupibomure.pdfIn PDF document text
    • https://site-1036746.mozfiles.com/files/1036746/38161248663.pdfIn PDF document text
    • https://site-1038794.mozfiles.com/files/1038794/89419300406.pdfIn PDF document text
    • http://files.jimcottrill.com/uploads/1/3/1/6/131637291/3790801.pdfIn PDF document text
    • http://divofax.carrbridgeselfcatering.com/uploads/1/3/0/7/130775256/6904551.pdfIn PDF document text
    • http://files.gallantsbiocorner.com/uploads/1/3/0/8/130874431/478480.pdfIn PDF document text
    • http://files.michelleclarkvm.co.uk/uploads/1/3/2/3/132303269/kisebafopiwuke_pafumew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 5424 bytes
SHA-256: 7de4655a94d12689fb9e97782d16d7454f3fab78bedcbb0fa42d21b00e821725
font_01_sfnt_off00007582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7582 9964 bytes
SHA-256: fc3d7ec7c5b598c9cd38f6a48c52074a1781db00736812a8b8f8dd387c40316a