Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fb7b72b1436e89…

MALICIOUS

PDF

75.6 KB Created: 2021-03-16 19:19:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8bf22d28ac1e5c20dc4f4d11adffc01a SHA-1: 21ce58bede58bff5c518395691dc5182f573646d SHA-256: 34fb7b72b1436e89d2470311c5a0282907fb478d615828f9b09a1e1f06946721
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a suspicious domain, likely as part of a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a search query, further supporting the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=are+milkweed+tiger+moth+caterpillars+poisonous PDF link annotation
    • http://sakivometo.medianewsonline.com/82773600749.pdfIn PDF document text
    • https://lozezuxugi.weebly.com/uploads/1/3/4/0/134016676/faboregexifexamini.pdfIn PDF document text
    • https://japosazononugad.weebly.com/uploads/1/3/4/5/134583509/bowomiwawonagok_judajudirujata.pdfIn PDF document text
    • http://buyfastedcircle.xyz/ejercicios_resueltos_transistores_bjksgl2.pdfIn PDF document text
    • http://sugalomiwuto.getenjoyment.net/lorewowe.pdfIn PDF document text
    • http://halfraire.xyz/cerfa_13750_5_remplissablexoey6.pdfIn PDF document text
    • http://surerup.22web.org/what_channel_is_kxan_austin.pdfIn PDF document text
    • http://idealsit.fun/how_to_adjust_bluetooth_volume_on_samsung_tvq8wb3.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/614f9a.pdfIn PDF document text
    • http://lnstagramsecurity.net/how_to_bypass_lid_lock_on_cabrio_washerr7c06.pdfIn PDF document text
    • https://wenabavur.weebly.com/uploads/1/3/1/3/131379405/mifixajovobitasedo.pdfIn PDF document text
    • https://fasepilof.weebly.com/uploads/1/3/1/1/131163931/jemefinibarogejatefa.pdfIn PDF document text
    • http://muvirire.22web.org/quimica_inorganica_catherine_housecroft_portugues.pdfIn PDF document text
    • https://vafabifagid.weebly.com/uploads/1/3/4/5/134583570/tulomisewomawadom.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/mekonulegipero/hammerson_plc_annual_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/berger_colour_catalogue.pdfIn PDF document text
    • http://ragidunu.rf.gd/segowedigej.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/gawimegidezigupulifobi.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/zavojubebojujuxilumirezi.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/gta_5_lspdfr_callouts_mod.pdfIn PDF document text
    • http://kipadixot.rf.gd/46345340626.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE795 5632 bytes
SHA-256: e4cafed2e0dd8a27d666536d3a3bc719a3329681601e0fe906daccd627d4ab4c
font_01_sfnt_off0000faad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAD 10696 bytes
SHA-256: 351d5a359d8cbe1c0466803f398042aecb48dd378c6a304b5a494f45cb652f10

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