Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2c89d388c84c4a…

MALICIOUS

PDF

75.6 KB Created: 2021-04-08 08:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e925157d0081e8fa8693122e42c59b4f SHA-1: 6beb6e52262854c3318b3cc8c4da4ee52870b6b2 SHA-256: fc2c89d388c84c4adb2b83205d92dcba7d30d66f618fd2728a017c5d921e8bd6
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to trick users into visiting malicious sites, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/strik?utm_term=what+is+the+process+of+underground+mining PDF link annotation
    • https://lujututuvaribo.weebly.com/uploads/1/3/4/3/134339905/bogovap_zubonopo_dizoxojozone.pdfIn PDF document text
    • https://cdn.sqhk.co/kenipafitu/ajhUlia/dolix.pdfIn PDF document text
    • http://brumbum6.xyz/todojozizatovox1jc4.pdfIn PDF document text
    • https://mepapezivodeno.weebly.com/uploads/1/3/0/9/130969154/rezeronipalun.pdfIn PDF document text
    • http://wspring.space/415429057122iy41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_604b65b3cee61.pdfIn PDF document text
    • http://nefritthebestthing.site/29843044959wl5tx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485448/normal_5fe5ef6fe41a3.pdfIn PDF document text
    • http://ponemofetu.scienceontheweb.net/vishnu_1008_names_in_sanskrit.pdfIn PDF document text
    • http://bilkaita.space/195288093202rv1z.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/0Kjap69/daily_drop_deals_coupon_code.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/dejdhVN/82169445212.pdfIn PDF document text
    • https://wulelosen.weebly.com/uploads/1/3/5/9/135992808/panemoxujuradudux.pdfIn PDF document text
    • http://bitoxifa.sportsontheweb.net/what_lexile_should_a_3rd_grader_have.pdfIn PDF document text
    • http://subbellassecret.com/vitamix_e320_explorian_blender_accessoriesngxqm.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/b025c0af7f4f349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495526/normal_605b6fa36eb76.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kofabube/89998332984.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/lowasakitiduxepip.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_off0000e922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE922 5552 bytes
SHA-256: a84d1be634632ea5a3ba5ee71909d165a8b2243c0746cc93161d02bcd15bd68e
font_01_sfnt_off0000fbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE6 10968 bytes
SHA-256: 0d8e944f6f230ca137332fe8a3b44828385c5f12438dbfdcba390e206ffa2089

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