Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f500422a2083f3…

MALICIOUS

PDF

73.6 KB Created: 2021-01-19 15:43:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6e967354ab61a6e6cf0204ecc9086869 SHA-1: ba0a642dd2b4acd04ef9f606c473e582c607532a SHA-256: 93f500422a2083f3be6cb418ff11791c1f29f6e5f6a77ca286b8862abfca5f15
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by a machine learning classifier and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate an attempt to redirect the user to a malicious site.

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://jottigo.ru/123?utm_term=canon+meaning+in+art PDF link annotation
    • http://wozutujetotox.iblogger.org/35261972032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5fa37ba290a64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426549/normal_5fb35a8c1dd5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391896/normal_5fdca173b2230.pdfIn PDF document text
    • http://pimebujeben.66ghz.com/52124829032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5fb8f4e44b61d.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/vesubodufisi/zunokipu.pdfIn PDF document text
    • http://bakenexiradofo.epizy.com/12802319013.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/carnivores_herbivores_and_omnivores_worksheet.pdfIn PDF document text
    • http://xuwugufufokiti.epizy.com/airbnb_house_rules_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/jutewajofulosefuruzu.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/ziwuzakiwozokebabazo.pdfIn PDF document text
    • http://puwagof.rf.gd/64570231884.pdfIn PDF document text
    • http://gegukisakewomo.rf.gd/sojavafumaxakukibagi.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/attendance_sheet_sample_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/anaconda_python_3._5_linux.pdfIn PDF document text
    • http://lumuwejonalar.epizy.com/43098213985.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_off0000d821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD821 3248 bytes
SHA-256: 9115d517e85561c51aba35c613a94595dae334a14cee699c9115bc578badcade
font_01_sfnt_off0000e3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C1 4700 bytes
SHA-256: b19ae93d00090d7769c4d844bfdc634d5ccdb402a5a70268be173dbd1564d1c2
font_02_sfnt_off0000f3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A2 11496 bytes
SHA-256: d844e059c104c2ac860bcb331f1d460a74a014da3eefb3a518e9c493eb6ecf5e

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