Malicious PDF — malware analysis report

Static analysis result for SHA-256 9871cfe5f2ea3488…

MALICIOUS

PDF

82.9 KB Created: 2020-12-25 10:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 169fc25cc020f3590c9070b5cc105dc0 SHA-1: 3bc207d42d141cbeff94189fe1fe494a90097655 SHA-256: 9871cfe5f2ea3488b32815855853591e96c21f8b4567a9d8e54b6692c88116ec
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to contain text related to restaurant guides, suggesting a social engineering lure to direct users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=good+food+guide+best+restaurants+canberra PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450624/normal_5fad6908e4a53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f900af2d669c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466386/normal_5fd08a72cf54c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450421/normal_5fae208a75486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486965/normal_5fd834f186ab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_5f9dc90b1db17.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/giChcgf/whatsapp_images_free_download_in_tamil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467019/normal_5fbab647a0604.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://s3.amazonaws.com/dusubonifu/mcgraw_hill_connect_financial_accounting_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/39008021240.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/big_fat_notebook_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f305e5cc-3d3b-44e5-a015-a9b83ce3d76b/download_matlab_2016a_full_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07b8ebe-842a-4777-b4ff-221804ef20bd/vekufoxopobadilotapuman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a365f81f-85fc-4c17-8f7e-9ec03b0cb240/rezamafex.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/karujogononojosebunos.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/colliers_calgary_industrial_report.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A4 5208 bytes
SHA-256: 1f8810117bf75328eb8838afc4ce30c3068dcbf861189856e93f855c4e715c0f
font_01_sfnt_off00010a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A67 11040 bytes
SHA-256: 5758130d568e93bc51c8fde57e8be64e269ff7a8d8565507f168c9a7a82c9a46
font_02_sfnt_off00012fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FB5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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