Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eda8093d13bb181…

MALICIOUS

PDF

123.0 KB Created: 2021-03-07 12:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: faf027fed6a2531aed1f29ccdcb264c8 SHA-1: 842d0b1de237658ceb95aa6d3c7b726f83de74ba SHA-256: 2eda8093d13bb181d23803470ba32d95557cf6dff2e9a47e2b9141bdad29062a
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 designed to redirect to other sites, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The presence of external URIs and a link farm heuristic suggests the primary goal is to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=best+mecha+manga+ever PDF link annotation
    • https://cdn.sqhk.co/fegozanodedu/gBF9CNv/dialogue_meaning_in_a_story.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/human_computer_interaction_cmu_minor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408343/normal_5fee929169c29.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/76890292988.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384469/normal_5fcf838201908.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/bulova_precisionist_chronograph_rose_gold.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484636/normal_6014e6d478f95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421352/normal_5fe7c9b500744.pdfIn PDF document text
    • http://zaxiluxedexu.getenjoyment.net/drawing_line_graphs_worksheets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484365/normal_5fe544fc63e52.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/i50hagf/pitaletiribabiwuzimoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/Agjjfge/59870657193.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rawigukegopafot.onlinewebshop.net/kiwolipivug.pdfIn PDF document text
    • http://ligujizulogi.atwebpages.com/sovupijomurezutijopunit.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/boss_telugu_movie_hd_video_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b74d30fb-7666-43ed-bc16-6cc388a6605d/27729928954.pdfIn PDF document text
    • http://fajazimigig.atwebpages.com/jugagenabigufuziwozomoji.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/praying_to_die_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/jitekugoliludoporef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5df445-871d-4707-bb8d-ab80649007a6/programming_in_computer_science_courses_after_12th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7860c76-65ef-4cda-8014-b8a2978a5a1f/37935435787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ae2bdfc-3e56-4910-97e6-69ff22d3fe02/40569796747.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000199a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x199A5 4920 bytes
SHA-256: 0eaac522eab32543af530ac731f58ff813b9a62cda79b495e739ed6efd15d451
font_01_sfnt_off0001aa35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA35 11560 bytes
SHA-256: fa467d277026cc2e4ff4515523eff3a28c9d04c11074b4e3685574d133cbde9a
font_02_sfnt_off0001d050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D050 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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