Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce53a7909c10f532…

MALICIOUS

PDF

84.5 KB Created: 2021-03-12 02:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 55418ca3d0fe199987e1f3b0d1f6cde1 SHA-1: 270fa5f6f5c1b69949b68911d5b861788047a0b1 SHA-256: ce53a7909c10f532ce68ffe3e70ebb445fd4290c76a11136c7219e6f6ec1f6cb
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, many of which point to unknown or potentially malicious domains, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate that the document is designed to redirect users to external sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://druttle.ru/strik?utm_term=motorola+talkabout+manual+t200 PDF link annotation
    • https://tipowunukal.weebly.com/uploads/1/3/4/3/134355136/fupix-nugirasen-fikiwuzet-fepixej.pdfIn PDF document text
    • http://tryplafond.xyz/feasibility_study_report_for_project_pptvnxht.pdfIn PDF document text
    • https://nomikevokatipo.weebly.com/uploads/1/3/1/8/131859895/3f46a22f5.pdfIn PDF document text
    • http://lightly.store/nomuxebatewkfqq.pdfIn PDF document text
    • https://buxipowuno.weebly.com/uploads/1/3/4/3/134353207/pixaramuse-satexepigili-bufit.pdfIn PDF document text
    • https://vukuzimina.weebly.com/uploads/1/3/4/1/134109202/fa11e721ff7e99.pdfIn PDF document text
    • http://selectgetc.top/34700750494dbaw0.pdfIn PDF document text
    • https://rinapaluvubozi.weebly.com/uploads/1/3/4/6/134669605/425559.pdfIn PDF document text
    • https://vuzupugum.weebly.com/uploads/1/3/1/4/131453250/sezulanim_jokoradikulev_jovabotamumi_munelasofi.pdfIn PDF document text
    • https://devojakosumu.weebly.com/uploads/1/3/5/3/135314674/5426275.pdfIn PDF document text
    • http://mnatural.space/kenmore_water_softener_service_near_me9tmwd.pdfIn PDF document text
    • https://xulomonixibeneg.weebly.com/uploads/1/3/1/4/131455416/kebujiwiju.pdfIn PDF document text
    • https://pufetebad.weebly.com/uploads/1/3/4/7/134711346/balusote_jerokodilu.pdfIn PDF document text
    • https://zopodiwozexuma.weebly.com/uploads/1/3/4/7/134737972/2029791.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/vipinib/office_2019_powerpoint_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/asrock_z97_extreme6_ram_compatibility.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/cartoon_hd_apk_2018_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/42120947432.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/pizivasiboxuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35bdbb48-9cfe-4e91-b4d1-1e1b12402f47/lujatobexirelid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a34128d-b070-46f8-89b7-03e14a035b50/sankata_nasana_ganesha_stotram_telugu_free_download.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_off00010c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C58 5136 bytes
SHA-256: b0a86462077df2663eaf33925c5a8ec559bec171f44644836961bc170f5278f8
font_01_sfnt_off00011dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC4 12096 bytes
SHA-256: 3efe678af21fd5ab6e070cf7baf3c51ff7e2d5746b97ebb764818dfbb3732803

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