Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95643777ed6063f…

MALICIOUS

PDF

76.5 KB Created: 2021-03-29 20:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 85bb649547500e654a2394e02cb023e1 SHA-1: eba83cd77953563a8c7b0b33148447df63d5745e SHA-256: f95643777ed6063f03f0939ddd776d7b7f734914d8e0dc498acaa9a59c7b6954
96 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 an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The document body, though partially corrupted, suggests a lure related to 'compound area' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/strik?utm_term=how+to+work+out+compound+area PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485578/normal_5fe60b15c06b3.pdfIn PDF document text
    • http://defokozixeral.sportsontheweb.net/15491461527.pdfIn PDF document text
    • http://pifowovumuwe.medianewsonline.com/como_agua_para_chocolate_translation_to_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_6046aeea880d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462730/normal_600368c957264.pdfIn PDF document text
    • http://kurixuj.sportsontheweb.net/93044984843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452217/normal_605e10ee5ca21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476577/normal_5ff3cca9c9f5c.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/napisakaluja/expense_report_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4baf026-79aa-422a-98d1-792187709c05/cuanto_es_2_1_4_pulgadas_en_cm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7de8dd8-8e9d-4cb1-ba25-b3991579c926/best_forex_trading_technical_analysis_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3134eadc-b698-4356-88b8-d78bbfc87139/62174415432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd9e63c-32ec-46b6-99ed-2de41d2b3eb7/black_and_decker_drill_bit_set.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a5bd69-0d31-4a9a-819c-379c0f71dccd/gugisowugiditul.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/wubolakevomesulafoxag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5954faf-3083-48a1-88d8-f493f60f8852/is_amazon_going_to_rule_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b94617e-65c4-48ec-b5b6-843ae6d50069/43689933054.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/rozede.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/send_anywhere_software.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/cardinal_newman_sixth_form_term_dates.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/grammar_worksheets_for_secondary_students.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/53004788789.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 5128 bytes
SHA-256: bca418bba1547904933e9aba8eb4bd5c525121d7891653010c4171b9c9ed68a4
font_01_sfnt_off0000f611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF611 1576 bytes
SHA-256: aeb1ed3c152c9131dcf926a7bffc5ad1b483092c39f2febcbe5265a32dd01fc8
font_02_sfnt_off0000fe2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2F 11080 bytes
SHA-256: 12b0a47936a3e283e69afa58a8dc27481d828af04776dc9a40dce3d2f26bd681

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