Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff99e84e446ce5b…

MALICIOUS

PDF

67.8 KB Created: 2021-02-14 09:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: db80ed84388c412f3b26fdf71bc69996 SHA-1: 2da092908e8d0c0c42c3869ecb995ef1de7c6b37 SHA-256: 4ff99e84e446ce5b6e23c0f5b7758229ba6a0fe9378969380c7405d9318f2a66
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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/wb?keyword=anaganaga%20o%20dheerudu%20telugu%20hd%20movie PDF link annotation
    • https://namonivet.weebly.com/uploads/1/3/4/4/134493383/kalumuwavixil.pdfIn PDF document text
    • https://fukagopesuzidad.weebly.com/uploads/1/3/1/3/131381553/8005707.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465131/normal_6000756b52e67.pdfIn PDF document text
    • https://lupawepenotude.weebly.com/uploads/1/3/1/6/131606523/zumig.pdfIn PDF document text
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/371ee4.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/kemuge.pdfIn PDF document text
    • https://vatopefo.weebly.com/uploads/1/3/1/3/131398509/fukivozoxo.pdfIn PDF document text
    • http://sevelorovuwo.66ghz.com/jedugadumu.pdfIn PDF document text
    • https://keregejuvuja.weebly.com/uploads/1/3/4/3/134345288/miveweponogo_xokesagi_guruk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409798/normal_5fc714f7076b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474470/normal_5ffd0b147c796.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/memexelu/kinks_celluloid_heroes_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/polavonuz.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/science_fiction_double_feature_lyrics_sheet.pdfIn PDF document text
    • http://makidibe.epizy.com/extruded_polystyrene_sheets_uk.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_off0000cbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE4 5112 bytes
SHA-256: 07c4df973227ced54dd2e37b1f9eef051ca8a9b53f081f8f756881d670b92d56
font_01_sfnt_off0000dd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1E 10968 bytes
SHA-256: 0a18c4905cb4abbf25ac644e2008c0550a02cce0a617f5267335103a8182d6a5