Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5572fa68325f741…

MALICIOUS

PDF

75.9 KB Created: 2021-04-25 14:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 17c7e134c1cf47a1404088e4f8f92a83 SHA-1: 30638c4b901b30170720fd539d1e78d3d2a9a581 SHA-256: f5572fa68325f741a9b2334d1a9da03f4c67bdd36ba828329e51c7f57dcf9b6f
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to 'book order' and 'stock market report', aligning with common social engineering lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=after+we+fell+book+order PDF link annotation
    • http://prosucre.pro/after_hours_stock_market_reportku1al.pdfIn PDF document text
    • https://cdn.sqhk.co/tivaboloxome/ikgeeie/lanigorepapazo.pdfIn PDF document text
    • http://ca-manalapan.space/928351394977bru1.pdfIn PDF document text
    • http://kellys.space/650873609592eqsk.pdfIn PDF document text
    • http://getveran.site/48411411527k485o.pdfIn PDF document text
    • http://conicppjry.bid/international_trade_robert_c._feenstra_solutions8r58w.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/uhhvjib/flow_free_level_3_9x9_classic_pack.pdfIn PDF document text
    • http://odemebayisitrafik.com/human_resource_development_questions_and_answerssmkr4.pdfIn PDF document text
    • https://cdn.sqhk.co/givikofuf/eMaOvgj/mermaid_dress_up_games_free_online_play.pdfIn PDF document text
    • https://cdn.sqhk.co/tugadeboda/a4gehc6/78019502902.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/Whb3idW/mma_manager_app_store.pdfIn PDF document text
    • http://startask.ru/moxeranilurudagexazu9zq09.pdfIn PDF document text
    • http://nomiwiturej.getenjoyment.net/nilimomerajelubura.pdfIn PDF document text
    • https://cdn.sqhk.co/bexoninodag/ifaihib/70107859037.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/ujgjd0a/ninja_turtles_names_and_colors_and_personalities.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/las_edades_de_lulu_libro_reseaj5rd9.pdfIn PDF document text
    • http://kemikavar.mypressonline.com/almanac_of_american_politics.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/nigimul/75432166202.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/merge_excel_worksheets_into_one_workbook.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_off0000ebea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEA 4796 bytes
SHA-256: 0a35e5099e8485e77a2ff50c25b6f801b20ff680b0da62d33a4aeeacc350890c
font_01_sfnt_off0000fc5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5E 11128 bytes
SHA-256: 416e190a8cfe738565ce4c6edd16c47cd554ead6d33c1bfa56af917fafa97f19

Open this report in the interactive analyzer, or submit your own file for analysis.