Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b238ba6e538646…

MALICIOUS

PDF

80.9 KB Created: 2021-03-26 07:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6ba8c2ed29e9829407897dab97f9b89 SHA-1: eeb46e9422bce4f92aa42bf8203a8a221cdfa4b5 SHA-256: 97b238ba6e53864644fc2831c11391ee46b90c1188869dcbd06e88d81d6e947d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting a seemingly relevant document that links to a malicious resource.

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://soxebez.ru/wix?keyword=debugging+and+troubleshooting+ssis+packages
    • http://vutunema.mypressonline.com/walmart_tv_65_inch_stand.pdf
    • https://zogolobogin.weebly.com/uploads/1/3/4/6/134690222/884caf7.pdf
    • https://ziloboze.weebly.com/uploads/1/3/2/6/132683463/5f03b32a918.pdf
    • http://mofonuf.medianewsonline.com/58039776915.pdf
    • http://bamefidev.mygamesonline.org/similarities_and_differences_of_apple_and_orange.pdf
    • https://bafikesixetiv.weebly.com/uploads/1/3/4/5/134506736/0cf82648eda.pdf
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/5345087.pdf
    • http://nugawijuxuv.mywebcommunity.org/biochemical_tests_for_identification_of_medical_bacteria_macfaddin.pdf
    • https://tenojamerefu.weebly.com/uploads/1/3/1/8/131857247/relugomi.pdf
    • https://kikitepolo.weebly.com/uploads/1/3/4/5/134514310/xofobubigogiporufimo.pdf
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/a3f0039090f9bf1.pdf
    • http://piriveva.scienceontheweb.net/95491061403.pdf
    • http://sarupunojupud.sportsontheweb.net/79690666256.pdf
    • http://sadipize.scienceontheweb.net/japidovilimazez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_d4e22c7d66d74a008dc2e32af9cb8566.pdf?index=true
    • http://pozijawikubinun.myartsonline.com/learn_spanish_textbook.pdf
    • http://resilasijajatil.myartsonline.com/nanugokus.pdf
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_d797031fed6547c3af66afcb272e244a.pdf?index=true
    • http://sewemira.atwebpages.com/critical_thinking_skills_workbook.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1f1.bin
b3d8b4f4ef13faa1ba89bdf2140192a4c7377c8b0c6cc086e2443d44814c1067		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F1 5420 bytes
font_01_sfnt_off0001044a.bin
54bd72d43ec3adb30e1204411aeda284f337effbd1b6fb6607a726acb57e65bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1044A 10740 bytes
font_02_sfnt_off00012858.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12858 4324 bytes

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