Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd33ec9dd8a43bb0…

MALICIOUS

PDF

43.1 KB Created: 2020-10-08 17:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e2f96d540f08885b4728e87ed02b7375 SHA-1: 578fcfa731b84dc610ef725b6e9793d6ab0a6ca9 SHA-256: dd33ec9dd8a43bb003e4e6ad947c35c35f0eda20a83b12b22f56b94e43757217
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://ttraff.club/pify?keyword=moorpark+high+school+track+and+field+records In PDF document text
    • http://files.markneeley.com/uploads/1/3/1/4/131453194/263059db.pdfIn PDF document text
    • http://sopikatus.eastgwentreferees.com/uploads/1/3/1/6/131637419/fojusapimukerirug.pdfIn PDF document text
    • http://nulabexab.westernanimalresources.org/uploads/1/3/2/6/132696063/patoxiwowu.pdfIn PDF document text
    • http://files.sos-socialmedia.com/uploads/1/3/0/7/130776219/deragapefi-zugexuzuxural-mujivamofifem-refumunase.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/67428101528.pdfIn PDF document text
    • https://site-1036824.mozfiles.com/files/1036824/8254057832.pdfIn PDF document text
    • https://site-1036719.mozfiles.com/files/1036719/rolarusozunamogoxunakixu.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/72607315432.pdfIn PDF document text
    • https://site-1043704.mozfiles.com/files/1043704/netugojavidasazojefubi.pdfIn PDF document text
    • http://nutuzu.chasingeverydayadventure.com/uploads/1/3/0/7/130738731/mirajixubikufe_kosafo_vovor_xuguwumividiz.pdfIn PDF document text
    • http://files.hycyachting.org/uploads/1/3/0/7/130738861/fukokav-sekawake.pdfIn PDF document text
    • http://kinovefiw.energyharmonybalance.com/uploads/1/3/2/7/132740478/7956083.pdfIn PDF document text
    • http://virofejug.centralcoastwineworks.com/uploads/1/3/2/6/132682883/jogesimofupop.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/ee76065f-0310-42c4-952d-af9e0cfc6cd1/91398879628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff8d9b6-53d4-43ef-81e1-d8936afe0791/laxalitozalas.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B5 5484 bytes
SHA-256: 1ca22ccd9260a8ba231d6728e28322d1e8c8b803e7697e2210b3618c470fd597
font_01_sfnt_off00007a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A65 10880 bytes
SHA-256: caa20b9ca5a4ebb03c84aa5bc808d8c3836ad7349c12859611a1ee079a301122

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