Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ab3aaadb222610…

MALICIOUS

PDF

73.8 KB Created: 2021-03-01 06:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 292329691ad68be489e81bdb742c1dec SHA-1: a42fd8d31ad7b5fc9c5c7bf882adcd3baaf46e4b SHA-256: c8ab3aaadb222610a11cd0ea54cd2c9842a290885996fd15145a64015a45a006
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially obfuscated, contains a title related to a common household issue, likely serving as a lure. An external URI, 'https://seumenha.ru/aws?utm_term=what+do+you+do+when+your+grill+won%2527t+light', was extracted, suggesting the document's purpose is to redirect the user to a potentially malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=what+do+you+do+when+your+grill+won%2527t+light PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404488/normal_5fff0cd0876e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5ff96d5357396.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/how_to_reset_maintenance_required_light_on_03_honda_accord.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/1914384626.pdfIn PDF document text
    • http://wodekenizowa.getenjoyment.net/lupewi.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/top_10_photography_tips_for_beginners.pdfIn PDF document text
    • http://gamowenugeg.sportsontheweb.net/black_and_decker_grass_trimmer_spool_cap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486367/normal_5fc7c43e41110.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/nalifij/biryani_photos_free.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/22717583214.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/dijovomovagu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/72576759478.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/bixadovusaluzi.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/bofesanudesowikorikukife.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/zikogugipid.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/thanksgiving_worksheets_3rd_grade_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/dispositivos_de_entrada_salida_mixtos_almacenamiento_y_procesamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/88466256388.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/imagery_worksheet_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/intellij_idea_keyboard_shortcuts_cheat_sheet.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_off0000e34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34F 5148 bytes
SHA-256: d0720c78479f363ea48fae093d6d3bc602fefad607288936d2f9c284d0c411f2
font_01_sfnt_off0000f4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F3 10868 bytes
SHA-256: 3ee92ab67e5ce90dc48c553ce23010541e0c078a2826216c3da2afb71fcf3b41

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