Malicious PDF — malware analysis report

Static analysis result for SHA-256 925f6c4e814043d6…

MALICIOUS

PDF

39.5 KB Created: 2020-11-07 12:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 356fd79f7126b2078ad22a29a5efdee8 SHA-1: 9d992b4749bf2158c0fb82a7d9481a3a6b6e3dbd SHA-256: 925f6c4e814043d6beabd70cb758f68b40ea5ebd468a17c64fcb9d00b7582a8b
124 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically 'https://traffmen.ru/wb?keyword=lioden%20claiming%20lioness%20guide'. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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://traffmen.ru/wb?keyword=lioden%20claiming%20lioness%20guide In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lixivono.files.wordpress.com/2020/11/fallingwater_maggie_rogers_sheet_music.pdfIn PDF document text
    • https://relutoripepa.files.wordpress.com/2020/11/clave_del_producto_office_365_gratis.pdfIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/fijabawutunuzelomojoga.pdfIn PDF document text
    • https://dujexuguv.files.wordpress.com/2020/11/yamaha_4hp_4_stroke_manual.pdfIn PDF document text
    • https://nowikukiwego809870752.files.wordpress.com/2020/11/pupamogereb.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/42414021523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6c6fcd-1846-433e-9963-43fcb4f06490/noxeraziresinunoni.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/lusowezusemo.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/business_analyst_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://mafaxivovel.files.wordpress.com/2020/11/7346655750.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/ap_grama_sachivalayam_notification_2019_freejobalert.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_off00005afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFE 5104 bytes
SHA-256: af0308f98c552eeb7b1ba94bed458bab4205001389ecd00772784b5052225269
font_01_sfnt_off00006c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4E 11004 bytes
SHA-256: 0c2a05fdf8c9eab03ac2b09fdcf5100cba86d906732f15df2d48863e8efef695

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