Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80ded09afbc8de5…

MALICIOUS

PDF

70.2 KB Created: 2021-03-16 05:55:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d4e9ef30fdb39727706634cf9afca3db SHA-1: c67161765965db1e7cd2dba3f954fd196849c9f4 SHA-256: a80ded09afbc8de57c31abf7c67bcd869abac0de3c74da338a032e1f3f5fc07f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=systematic+combining+an+abductive+approach+to+case+research+pdf In PDF document text
    • http://pupezawat.scienceontheweb.net/mikuvuxeguralilirokuluv.pdfIn PDF document text
    • https://sibotapitagota.weebly.com/uploads/1/3/4/3/134378411/zezusabumapo.pdfIn PDF document text
    • http://tefuvawilutir.mypressonline.com/transport_business_proposal.pdfIn PDF document text
    • http://kenujuzuba.22web.org/how_much_do_wheelchair_lifts_cost.pdfIn PDF document text
    • http://muwifigawomadu.22web.org/suunto_vyper_battery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_60102c855cd86.pdfIn PDF document text
    • http://taxarigi.sportsontheweb.net/bozawobubifitusovigix.pdfIn PDF document text
    • https://cdn.sqhk.co/xutujipux/ifKTges/kanto_power_collection_target.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/ackaRtO/can_you_escape_tampa_london_room.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/XFahfQR/best_sound_equalizer_software_free_download_windows_7.pdfIn PDF document text
    • https://netigobulon.weebly.com/uploads/1/3/4/0/134096742/bapokixupulaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5fd938d44d359.pdfIn PDF document text
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/jisokawofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448129/normal_6018d4eb66156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5fcc07f62128f.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/77371332256.pdfIn PDF document text
    • http://nejetetivapane.epizy.com/31623928192.pdfIn PDF document text
    • http://kagimotazife.epizy.com/9785795428.pdfIn PDF document text
    • http://mivuturirem.rf.gd/algebraic_expressions_worksheet_year_8.pdfIn PDF document text
    • https://s3.amazonaws.com/dogevazapiwediw/66613335754.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/printable_hundreds_chart_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/all_minecraft_games_free.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_off0000d15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15E 5940 bytes
SHA-256: 62fa8d72c29f5e9f9c7cc4410eb151ce337bd3213240fd9ef65a221e08cbbf0d
font_01_sfnt_off0000e576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE576 10816 bytes
SHA-256: 196c5c9abfad96a8b66033fa09d85402e09c8ce7e1dc5d96ad961bc33dbedc58

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