Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8cffab522c6b56…

MALICIOUS

PDF

187.4 KB Created: 2021-05-28 05:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 05d56d3a92fed0cacde71ff91b809cb1 SHA-1: 72f739d59b0f13364fef3910d9f43379eca388b3 SHA-256: 4c8cffab522c6b56a50a60e4b84a40a6df95b69cf675f4d0b369e57015b85739
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 0.9937

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://jottigo.ru/strik?utm_term=how+to+change+a+genie+intellicode+keypad PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419644/normal_600fe3ce28f65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385424/normal_6046b61ecb200.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425501/normal_6001f5608f3a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370543/normal_60473e3d7f37f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420441/normal_5ff9f85bc861e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490133/normal_605592fb0fd58.pdfIn PDF document text
    • https://gupoxebexu.weebly.com/uploads/1/3/4/3/134337811/7441105.pdfIn PDF document text
    • https://bagugesi.weebly.com/uploads/1/3/0/7/130775983/e70e05b4d50971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_6037f1f1d4c11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406191/normal_605b351532b12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455914/normal_603a3e748dba2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_603d21c7e56c0.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4445119/normal_60b040b2d7986.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452594/normal_5fde4be5a9634.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465274/normal_5fe2271c5b368.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/cf94d8fe-4ab4-40c3-ad9d-7323e11e55b1/59736568548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8852fa-7247-41c1-bd53-e61147f9d430/mainstays_student_desk_with_easy-glide_drawer_multiple_finishes_assembly_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9a24ec1-25f8-487d-ba2f-6b7af201f0cc/islamic_childrens_books_free_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d68f89-1c34-47ee-bb4e-e56f9a100d01/wafopativaxonuzuzorepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3baefdf7-a65f-4a9f-8b06-cd7ddfec6ed3/45189176342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1fd1df-b545-44b3-a9da-93f38865ea49/silitumaxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94845299-fcd5-4cef-ae06-5691da87b7b4/colored_pencil_techniques_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c22a3d-6f38-4fc7-824a-e06de3fd1fd3/70490777420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/501a14dc-8216-4c99-96b7-ff7c464ef7ac/takuxisid.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28720 2828 bytes
SHA-256: eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4
font_01_sfnt_off0002912a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2912A 5068 bytes
SHA-256: 2fdf1d1e74af8a8633167a27939186cc279aed34f7160ad0aea23b1cb85ce94b
font_02_sfnt_off0002a272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A272 14520 bytes
SHA-256: b54529362da2228363b470aa10103a4dd775709678f5a164a5ade9852ec89885
font_03_sfnt_off0002d022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D022 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.