Malicious PDF — malware analysis report

Static analysis result for SHA-256 943ffee466014646…

MALICIOUS

PDF

68.9 KB Created: 2020-12-01 05:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 49a17ed6635e539517aae09567f12ff8 SHA-1: 51b4b4992d037d231e7bd81eb557bd72a439af64 SHA-256: 943ffee4660146460ad4dfb6e75f9d9140481affc96462b417bc40323a8d2a09
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. ML classifiers and ClamAV also flagged this file as malicious, indicating a high likelihood of phishing or malware distribution. The presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/123?utm_term=city+lights+band+mn PDF link annotation
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/7c788.pdfIn PDF document text
    • https://litepuvib.weebly.com/uploads/1/3/4/7/134741427/folajitanav.pdfIn PDF document text
    • https://fitepavi.weebly.com/uploads/1/3/4/4/134485464/62990aae29edc2.pdfIn PDF document text
    • https://galafiki.weebly.com/uploads/1/3/4/3/134347291/90607.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd237330b50a6bc4cc8951/1606230899160/aqua_tech_5-15_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ef8fc6229360ecad283f/t/5fc562d99d79364840422e5a/1606771418599/limbo_pc_emulator_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/anticoagulantes_efectos_adversos.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc149731c8c741314347862/t/5fc2d79c08845d0924e7f886/1606604700496/clue_fx_instructions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc284356609fd0ee79ba959/t/5fc4be24f8cdb769c678d536/1606729252843/bukuxepubitamaxu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10620bf71053ccb10dd13/t/5fc37ab37acac6192a2d0ed1/1606646454260/chiste_del_dia_viernes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adb1af33-0add-4f7a-b8f1-31ef4e524b16/ledajidexomezebimotima.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f4a62e34347c70445090/t/5fc2ecc808845d0924eab604/1606610120836/15198438509.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_off0000d0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B2 5292 bytes
SHA-256: 9f2e1f5602a08e9d8d6b5c4c9706ffc7af45a3fa8347f0967468f608c3e23e40
font_01_sfnt_off0000e28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28A 10748 bytes
SHA-256: cf3ea9e07d60bbfe6accc07d7952ca673463a866147247634100a4805248599c

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