Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8c29ec14fa644f…

MALICIOUS

PDF

81.3 KB Created: 2021-02-27 00:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 076ec691b47dfa801f948af358eb116e SHA-1: 4993cf43b62ea2615b141dd74535213e6ce00947 SHA-256: 9a8c29ec14fa644fae836e74642d2a9ff4b1c1d9d4656f8c52eb93d3c4830720
134 Risk Score

Malware Insights

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

The PDF document contains a lure related to a fish farming project report for a bank loan, which is a common phishing tactic. It embeds multiple URLs, one of which is flagged as malicious and used in a link farm, suggesting an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://soxebez.ru/strik?utm_term=fish+farming+project+report+for+bank+loan+pdf+free+download PDF link annotation
    • http://businesshelpservice.com/charter_cable_tv_ref_code_s0900iok6d.pdfIn PDF document text
    • https://wofiwajelakezod.weebly.com/uploads/1/3/6/0/136092853/8156ca38.pdfIn PDF document text
    • http://cleanup-sale.site/wupigepobuwaxikuwo7hxn4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481830/normal_601e48f166da9.pdfIn PDF document text
    • https://cdn.sqhk.co/duvetezoje/Ifjjifp/funny_words_that_begin_with_the_letter_c.pdfIn PDF document text
    • http://ifeelgood.club/durability_of_concrete_structures_reportdh2kc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390999/normal_5fe4712c4f82b.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/gjP8hdu/jaxovipakan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499984/normal_5fcb14b568062.pdfIn PDF document text
    • http://jixapijojuxev.iblogger.org/wukoko.pdfIn PDF document text
    • http://card2card.live/36113488678y3mv7.pdfIn PDF document text
    • http://diduziwiti.22web.org/baahubali_2_video_songs_telugu_mp4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sikofus.epizy.com/atrial_fibrillation_treatment_guidelines_2018.pdfIn PDF document text
    • http://dovukixopajiduw.epizy.com/xojofo.pdfIn PDF document text
    • http://rebopugosive.rf.gd/32622322278.pdfIn PDF document text
    • http://gedonisezif.epizy.com/21309323874.pdfIn PDF document text
    • http://pibekolovaxizon.epizy.com/bigetadidimowitewevesawuf.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_off0000fe93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE93 5896 bytes
SHA-256: b368db123512d66e51bcb5162ae9a4bb1a258ff043e46562e99a299fc0319d3d
font_01_sfnt_off00011296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11296 10768 bytes
SHA-256: c4d172ac4135f946798d86d7881bcfa7bf10d9cec42a49dbbfa91d46c3b3f7e3

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