Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b506609bcb7c23f…

MALICIOUS

PDF

78.2 KB Created: 2021-05-04 16:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 6cb1ad444f2ed6ad84eab40c86fecf17 SHA-1: a9dfdd85a9df1a1c010fff0da1f255d61f677dcf SHA-256: 6b506609bcb7c23f3ccc0c5ba7704b08f22ea3b92bf3f6a0367be6c48f68c704
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 0.9997

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://botokaw.ru/strik?utm_term=te+mueves+t%25C3%25BA+in+english PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379487/normal_6052e06321a13.pdfIn PDF document text
    • https://cdn.sqhk.co/budatumibowu/iaiiOgV/clock_face_template_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rejibebadit/n9jagcd/89618551921.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472475/normal_5fe502bc5e27c.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/fghghhg/nadasixejexesilamoramanod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369762/normal_6033a41334d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481673/normal_6052a5ea60689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407304/normal_5fcc41eb5f6e5.pdfIn PDF document text
    • http://vezukugijisepo.scienceontheweb.net/21440428959.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/0l5JQX8/pojelimegoj.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/526501ec-56cc-463e-91d5-4b51e8d73dd6/rehras_sahib_full_path_audio_mp3.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/zirobikuzarex.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/attorney_authorization_letter_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde008dd-4e64-49f2-bdf5-a9e5703d0070/89839962958.pdfIn PDF document text
    • http://dolanuvusipegu.myartsonline.com/busaxotetezuvodapiwit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b4cdb3-e535-4817-a61b-f955f32b2fe6/biboboxukan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d9ec55-7adb-4d2d-b049-474250735dff/anne_bradstreet_to_my_dear_and_loving_husband_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/gilded_reverie_lenormand_card_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1fa1c57-8702-4489-9f7d-24f3e716f066/38828375612.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/metformina_1000_mg_para_adelgazar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7350bd8c-4489-461e-8002-88d26d411284/puwoxosolexunajezevesaja.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_off0000e9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CB 4916 bytes
SHA-256: 08d41b41c6e5b4664cd143bc4157f68aee8fcccecafe2e1638f26c0995753ad7
font_01_sfnt_off0000fa2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2F 1864 bytes
SHA-256: 614ed29908490b2cf6eaaca9d0091e1e84029f876ebc83a1b5e4ffadee7cd41d
font_02_sfnt_off0001033d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033D 11676 bytes
SHA-256: f557f489821bf12158198b484886f29d00e22d86c7b4aa812f0d9348bd4a38f6

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