Malicious PDF — malware analysis report

Static analysis result for SHA-256 221d5aa2d0dae7fa…

MALICIOUS

PDF

78.8 KB Created: 2021-04-03 03:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332addefc59ae4a3f401418709fe4830 SHA-1: d2eaeb20c33c71db9c836ae688e7a122ca9e3a76 SHA-256: 221d5aa2d0dae7fa20a27a423c32e016b81f53428de159634126ee8d7d5d201c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, contains text related to spiritual healing, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=oracion+al+espiritu+santo+para+sanacion
    • https://static.s123-cdn-static.com/uploads/4384145/normal_60021e2ea412e.pdf
    • https://static.s123-cdn-static.com/uploads/4458827/normal_5fd03b70341c5.pdf
    • http://bogipeborowe.sportsontheweb.net/24039903379.pdf
    • https://cdn-cms.f-static.net/uploads/4377128/normal_5fdbd772e82f6.pdf
    • http://lebedugipul.mywebcommunity.org/moravian_workbench_plans_will_myers.pdf
    • https://static.s123-cdn-static.com/uploads/4480878/normal_5feee8cf6cdc4.pdf
    • https://static.s123-cdn-static.com/uploads/4477629/normal_5feb69110496b.pdf
    • http://nizavevorupuj.mywebcommunity.org/76940158885.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pasejisozud.rf.gd/capital_structure_and_firm_performance_in_malaysia.pdf
    • https://s3.amazonaws.com/regovadeje/bfa_alchemy_level_guide.pdf
    • https://s3.amazonaws.com/loneminovu/2761532620.pdf
    • http://dajomilot.atwebpages.com/aquacultura_em_mocambique.pdf
    • https://s3.amazonaws.com/susonanezaj/nefapoxamojex.pdf
    • https://s3.amazonaws.com/wurivuve/burnout_paradise_pc_compressed.pdf
    • https://s3.amazonaws.com/wunupalezozerud/attu_movie_free_tamilgun.pdf
    • http://poziluxolebulu.epizy.com/39462960625.pdf
    • https://s3.amazonaws.com/savukojubusum/pemorixe.pdf
    • https://s3.amazonaws.com/tizowodifi/vuvabezebubatut.pdf
    • https://s3.amazonaws.com/donarepemi/html_format_text_as_currency.pdf
    • https://s3.amazonaws.com/memobofilenabon/when_is_spring_break_2020_for_hillsborough_county_schools.pdf
    • https://s3.amazonaws.com/retisovojor/rent_agreement_format_india.pdf
    • http://davobob.rf.gd/11390375713.pdf
    • http://jewixijanag.rf.gd/tai_chi_wooden_training_sword.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f505.bin
de35df2b4ff6490d0bbc1965d063e76a32b43bbe3480e8a7c4fa504e980794f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF505 4956 bytes
font_01_sfnt_off000105e7.bin
8962c332a3b0a5b3d10ab1ab112d511d8e7999756a9025e17cb4da7b27d68b94
pdf-font-stream PDF embedded font (sfnt) at offset 0x105E7 11780 bytes