Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50beb5fd62e39ad…

MALICIOUS

PDF

98.2 KB Created: 2020-11-26 03:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fb0ea6af3244f26fc7db422b6e744f7c SHA-1: be3c4548772fc1e887f8e286ba48df8b44df9944 SHA-256: a50beb5fd62e39ada8fd814eff0bb86bc8d45df5b798c4a0a377a6e05a0d2767
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=roberto+duran+net+worth+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f9624da7628e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_5fa1eb9e88b3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454179/normal_5fa9c9f767849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f8d2787d01e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5f9f8956a52de.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/dowavelaxam/51147011251.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/kolam.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/reliability_engineering_lecture_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/tuzapowotamiketoxutise.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/xazigiganasirowewomazowa.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/vegorukogureli.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/jonegujes.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/mejuveturozosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f545305f-06b3-43f6-b5c9-a3aee25aae5d/pegukodobemisobomesewaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/y_mx_b_word_problems_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/frequent_oater_character_crossword_clue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3493c4f-10d0-4b5f-876f-9a6ad68cc474/38871134374.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_off00013f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F37 5216 bytes
SHA-256: 4fafa9e3bff2ef5fc6fdc0b94971ebc0214614659f1073d56981c969c6622645
font_01_sfnt_off00015100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15100 14284 bytes
SHA-256: f4620356f219d6185707ee8fa5de7c10c327a330467ce219782b50ca01d25a0a

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