Malicious PDF — malware analysis report

Static analysis result for SHA-256 312f5ea7ce8abcc8…

MALICIOUS

PDF

84.7 KB Created: 2021-03-15 10:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 79bc0a01427610630cffed6b0d6c55bf SHA-1: f1f7f6caa21b16e91608f8f26ba90eb2c4a13c68 SHA-256: 312f5ea7ce8abcc8ef9f7a5d512e1821a187d10b1ee734682961a507c8ce0ae4
214 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and impersonates a cloud document lure, suggesting it's designed to trick users into downloading further malware. The presence of a password archive lure indicates a multi-stage attack where the user is prompted to open a password-protected file, likely containing the actual payload. No scripts were extracted, but the malicious link and lure tactics are strong indicators of phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://crophysi.ru/123?utm_term=backup+software+free++for+windows+10 In PDF document text
    • http://onlinetyz.xyz/tolonetina6cdv6.pdfIn PDF document text
    • http://lovewaits.ru/bedipodozatoztd2va.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383160/normal_5ff564398cd08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477863/normal_60252d3180045.pdfIn PDF document text
    • https://zivotawab.weebly.com/uploads/1/3/4/5/134576919/b098d94832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fd2d18367d05.pdfIn PDF document text
    • https://pixebekisutajud.weebly.com/uploads/1/3/0/7/130775176/61f0a3e2033ff2.pdfIn PDF document text
    • http://chunyoo.com/sagofipudisekujorejnf69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459917/normal_5fd03c2a690a2.pdfIn PDF document text
    • http://mnogolidov.xyz/72768944852bay2d.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/visusogu_duguxiketupupa_parovawar_foronosoviz.pdfIn PDF document text
    • http://select-get.top/kojuvibokesodikaxalg5xr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415964/normal_604a760cee8ed.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/kelukakeb/93803104760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbd4d5e-2612-446b-9852-c8b2902169c5/juxukebezubamogira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa2db61-b533-4488-8077-9af8b103f8e5/pemelexuwizitazuzitavug.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/98511225909.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/multipart_form_data_json_example_php.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9b1d1e-64cc-4943-b4fa-c541f260322b/sirudidirejepezufinuvurog.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/passing_your_itil_foundation_exam_axelos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a73a79a-9753-4b01-943f-50fb40dbf21f/free_math_worksheets_for_kindergarten.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18f68506-17b6-4a84-9905-7069ff04b7a7/20676984071.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/delhi_belly_full_movie_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/what_is_the_theme_of_the_story_young_goodman_brown.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_off00010d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1F 5516 bytes
SHA-256: 3f7a45467dffa73507f063ae02ff69163071b4c14bd745c3a308c881232170dd
font_01_sfnt_off0001200b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200B 10384 bytes
SHA-256: adba1e53203fcbcf14aa67d21a4c4c93aa94887fc103ee0e3fc06fe142f0f603

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