Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc88ccc45a78df9b…

MALICIOUS

PDF

78.1 KB Created: 2021-06-06 00:28:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 17f67afa73cdf218fe8d810360ffe737 SHA-1: 9a5ea2bf2096f79fa86753cd48a3b26ce508b62b SHA-256: fc88ccc45a78df9b28d1dce28304bd248d619f5da71644a931cecc7992b6ce61
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'medvor.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://medvor.ru/pbw?utm_term=mean+median+and+mode+in+positively+skewed+distribution PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458145/normal_60411a4261780.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_601a3cc10135f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_604e8443d3837.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414852/normal_5fccaaa88cd30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412158/normal_6066bf7203275.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475389/normal_5ff5a339eaa75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500893/normal_5fdf21f7b5584.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374689/normal_6000463c245ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463807/normal_6010f72319338.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372355/normal_5fe59e79cf82a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475406/normal_6031bddf2240d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370768/normal_5fdcfa674b0c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408993/normal_601c8dfbb9dd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388037/normal_60329015e39a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_60334cb429fa1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457272/normal_5ff81b473073e.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/f1630bed-8b4a-493c-9411-d182d9dd5f21/de_longhi_nespresso_kaffeemaschine_lattissima_one_silky_white.pdfIn PDF document text
    • http://dowiginade.pbworks.com/f/imagery_in_lord_of_the_flies_chapter_11.pdfIn PDF document text
    • http://xizegopago.pbworks.com/f/58909478776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe90c422-365e-4bc6-9dc5-72f564e39e8a/pablo_neruda_y_sus_obras_mas_importantes.pdfIn PDF document text
    • http://xugilip.pbworks.com/w/file/fetch/144501267/nissan_qashqai_n_connecta_2019_manual.pdfIn PDF document text
    • http://febamizilaw.pbworks.com/w/file/fetch/144610440/82319050014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb44b6de-a768-4f23-8bd9-94d1a25cf581/51534099238.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_off0000e394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE394 5448 bytes
SHA-256: a36fd8d81c84e88cae649156d60c2e343c5890ccbd1b6d35bb23ba6d51a5e226
font_01_sfnt_off0000f61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 11252 bytes
SHA-256: f1e33e737fa22371899325dd31e7c8877a32456a54d2a76f565183e796bb17d9
font_02_sfnt_off00011c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C71 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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