Malicious PDF — malware analysis report

Static analysis result for SHA-256 babb51ad56b56ab4…

MALICIOUS

PDF

86.3 KB Created: 2021-05-24 13:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0218f3a00258dd132da76340b0f00d09 SHA-1: 282a5ebbfdad568e0aca6479a7ce2b94af42da47 SHA-256: babb51ad56b56ab42161cd65da092647961cb9b95570eb1fc3dbc07dc8d24251
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic indicating a link farm and an embedded URI pointing to a suspicious domain, suggesting a lure for malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The document body, though partially corrupted, contains text related to a movie title, reinforcing the lure aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://mezovuduw.ru/strik?utm_term=el+caso+de+cristo+pelicula+completa+en+espa%25C3%25B1ol+latino+mega PDF link annotation
    • https://wopixidotawus.weebly.com/uploads/1/3/4/5/134506387/gepenukunekuvun.pdfIn PDF document text
    • https://vukekitap.weebly.com/uploads/1/3/1/4/131438073/2766993.pdfIn PDF document text
    • https://lumozumaxovoj.weebly.com/uploads/1/3/5/3/135348549/9818901.pdfIn PDF document text
    • https://bifomika.weebly.com/uploads/1/3/1/8/131856700/xozafowu-bozolix.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/lowupuvosuzoz.pdfIn PDF document text
    • https://litusavetedi.weebly.com/uploads/1/3/4/4/134445261/guvufodusalopijipegu.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/mojuk-xabawunof.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/sesafefanulokam/condition_of_postmodernity_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/animal_research_project_template_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/91927302311.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/76949656127.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/52231455.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/kawunajerap.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/dichotomous_key_leaves_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/platformio_esp8266_upload_port.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/dukajedubilu.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/43651098400.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/61066581449.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/why_buildings_fall_down_why_structures_fail.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/12_step_meeting_attendance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/six_sigma_black_belt_project.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/2909803128.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_off00010ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF3 5564 bytes
SHA-256: 9b7ccd889aeb12b537e23defdde2206998541361bfd51fcd690e4fe90d548b05
font_01_sfnt_off00012183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12183 11896 bytes
SHA-256: cbb6b1a4c2ef805123d2cb9035afc248c7ccb82d231a07a12d4d94a704cfe43c

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