Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbff13e1eef9b2f9…

MALICIOUS

PDF

298.6 KB Created: 2020-11-18 10:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6c5e428a8f04f21b2ab1b1c301543bf7 SHA-1: 5a175b11db4e0c627a622703ebc81df0d795ebcd SHA-256: bbff13e1eef9b2f95a8d4a2d9d6782bf0bfcf969c76003a3372f13de9ed7096d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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/strik?utm_term=go+crazy+2pm+mp3+ilkpop PDF link annotation
    • https://furevevesegino.weebly.com/uploads/1/3/4/6/134653878/vuwakamodelufafesuk.pdfIn PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/6631508.pdfIn PDF document text
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/namari.pdfIn PDF document text
    • https://valuluxunu.weebly.com/uploads/1/3/2/7/132710491/didetos.pdfIn PDF document text
    • https://tibirodemoxojuf.weebly.com/uploads/1/3/4/3/134336787/jebunefof_jitiwuzipiret_vemikewido.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/702f439d-675a-4f1b-a2c0-ed822b402466/36997035515.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51acbb80-9bd9-4b0c-9c14-e41f5d47e73e/kesuwus.pdfIn PDF document text
    • https://s3.amazonaws.com/lodunixodetum/coordinate_plane_distances_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/gobafoxetokofeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8b228aa-b6a8-4192-adb8-9cfa5f87b082/gaderalat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d10ce337-e4bb-4b1b-ab37-960916018aac/gijejumekegonolimiburudol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be948dca-6763-485e-83a4-fdbd85b57b77/detimirarir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06d4738-eca9-48e4-8f60-5af4f19fa46b/kovibuvavakokajolipufore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa13970b-0f4e-41a0-bae9-586c6cb56ee6/gosake.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000450a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x450A3 3316 bytes
SHA-256: 69a03ed2e6f75d3ab4fac367608a8661f94d102ac63d7d39e3ac5bb308aa8ea0
font_01_sfnt_off00045c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45C85 5444 bytes
SHA-256: 7c3e967b013400c75e36d2bf73ba8a51f548adfd5b09defd18fb63626ad66c92
font_02_sfnt_off00046f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46F0D 13148 bytes
SHA-256: 1c24f5910614095e2aa4c1d9479c5911ab96aa294cf1466afcd3d68752f440e8

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