Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d0294b789325c3…

MALICIOUS

PDF

88.0 KB Created: 2021-04-25 05:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 35e640573d4124a0c0abb9fbd6c39602 SHA-1: 4307ceda648a0866a0dc0e1907ffa53ad6396c5b SHA-256: d9d0294b789325c321639133c4fe4f52f1593a3f9c40ab39c4e71ca44320c325
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature. The document body, though heavily obfuscated, appears to contain search-related text, suggesting a phishing lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/strik?utm_term=ge+advantium+microwave+control+panel+locked PDF link annotation
    • http://kazuxigunifaz.22web.org/layers_and_gases_of_the_atmosphere_worksheet.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/cardiac_surgery_complications.pdfIn PDF document text
    • http://vivudanu.scienceontheweb.net/circle_and_circumference_worksheets.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/kifutizijebuj/manualidades_halloween_con_papel_higienico.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/4883799493.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/38728426406.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/biwaxurojonululesuxo.pdfIn PDF document text
    • http://kilarosine.atwebpages.com/streetcar_named_desire_mitch_and_blanche_scene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c86d8fb-fb8c-41f9-9cfe-760da6eff12c/10560222953.pdfIn PDF document text
    • http://fudesux.rf.gd/liselibegixap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2ca92fb-c08c-42d3-9f90-b1c78fdc2221/babozalapifovojipukum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49356c0a-cd9f-4307-bb34-1ef57c561585/robert_kiyosaki_new_books.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/xuvijulu.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/brush_script_font_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a14e618-d421-4261-a138-4ebdf9c41c08/con_law_outline_barbri.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/anexo_iii_simples_nacional_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973bc9b5-8a5c-413f-820c-56d4911fdb1c/ps_vita_games_for_sale_australia.pdfIn PDF document text
    • http://rokidibamufoduv.epizy.com/charts_tables_and_graphs_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/add_ons_internet_manager_mozilla.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_off0001181a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181A 5288 bytes
SHA-256: 96a21dd7455b1cb356cca4111e6fa097fb93831ba646e35195428706f5dd31af
font_01_sfnt_off00012a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1F 12052 bytes
SHA-256: a06f5cf486a299c737954e901b9a61e0d0217e15505e2a54e800aa6153afde97

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