Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a85c2b2275088d…

MALICIOUS

PDF

75.5 KB Created: 2021-03-09 09:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 34c9b5426e619d813c48414049bbf999 SHA-1: fa7c54a51927bf9dee734e9515d94f17251a7361 SHA-256: 09a85c2b2275088d6b1f3e84ba6a06ce96dd43769e78b9a5085ed158ec132ae4
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it's a link farm on disposable hosting and a payment redirection lure. The embedded URLs suggest an attempt to redirect users to potentially malicious sites, aligning with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://resalured.ru/strik?utm_term=sample+email+to+employees+about+safety PDF link annotation
    • http://jobware.pro/realismo_y_naturalismo_espaolaazx1.pdfIn PDF document text
    • http://iwhite.space/tomtom_start_52_release_dateq5tsg.pdfIn PDF document text
    • http://detonic-deutschland.website/a_simple_favor_film_musichri2g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410020/normal_5fd63b1a3026d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493890/normal_6029d4ade3549.pdfIn PDF document text
    • http://trynon.xyz/chameleon_launcher_pro_apkfium4.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/dxjgAq0/yt_love_photos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419205/normal_5fed67d887ac0.pdfIn PDF document text
    • http://zoomita.space/myocardial_infarction_pathophysiologym4tzu.pdfIn PDF document text
    • http://takipleskazan.org/dr_joseph_thomas_vitale_jrb1hsw.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetijesi/dHPUTJS/crayola_color_alive_camera_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/jighifr/1st_birthday_cake_ideas_easy.pdfIn PDF document text
    • http://sosed.market/indian_navy_mr_syllabus_in_hindip2or3.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafepel/gd8jagu/economics_jobs_near_me_entry_level.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409614/normal_5fcc99c78610e.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/eAhhChb/lovelace_women_s_hospital_er.pdfIn PDF document text
    • http://redtea.space/kazowuxoparakinuvuvu3g8jc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a497baf8-a3ef-4307-8f2b-db3a3784a6d0/kasojovozup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bba33f4b-9dc1-4a50-8b31-4ee58ef8cf52/81112429030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1305d1b4-de12-4d43-8291-42efd620ae05/how_write_a_research_paper_step_by_step.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_off0000ea22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA22 5296 bytes
SHA-256: 16dca7eb007da51810e6d4da05a66c7e1285ea8c02a4c81f3246af0c993118b8
font_01_sfnt_off0000fc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1F 10804 bytes
SHA-256: 6ea2104396c5bcc4d3411ee50c638451f720882346f8d996631dac677d1b02d6

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