Malicious PDF — malware analysis report

Static analysis result for SHA-256 c373b71044e5c7af…

MALICIOUS

PDF

78.8 KB Created: 2021-03-10 00:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e2d637b6f4d2f32edb7e655f872a6935 SHA-1: 0ce5e58e5012932b1a9feb2c7cbc100b7b729c04 SHA-256: c373b71044e5c7af839fd1d3ec02ddd040be8136b4fa1f4c7376f6342462c62f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a domain associated with malicious activity, as indicated by the ClamAV detection and ML classifier. The document body, though heavily obfuscated, includes keywords that appear to be a lure to disguise the malicious intent. The presence of external URIs and the overall classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/wix?keyword=durham+jazz+festival+2020+cape+town PDF link annotation
    • http://zuregazezoral.mygamesonline.org/22221668189.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/32305787848.pdfIn PDF document text
    • http://gakmancreatures.ru/ziduxosivosumifozax96f5i.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/80275125870.pdfIn PDF document text
    • http://koteyarn.moscow/pemowurevowenozovefalalehnw.pdfIn PDF document text
    • https://lemuwepino.weebly.com/uploads/1/3/2/7/132712354/38786a29dff1.pdfIn PDF document text
    • http://look-hotel.com/sandisk_secure_access_v2_password_recoverys7mc8.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/fitekisifi.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/has_aot_manga_finished.pdfIn PDF document text
    • https://latafixewikokaj.weebly.com/uploads/1/3/4/6/134687196/dajev.pdfIn PDF document text
    • http://fofumumitem.medianewsonline.com/regression_and_analysis_of_variance.pdfIn PDF document text
    • https://torusakewojowep.weebly.com/uploads/1/3/0/8/130814967/21885.pdfIn PDF document text
    • http://iclod.tech/who_owns_news_nation_indiat633p.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/derecho_romano_floris_margadant_libro.pdfIn PDF document text
    • https://nabovuguxobe.weebly.com/uploads/1/3/1/8/131871891/f2e6960da7.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
    • http://sogoxutagejuno.atwebpages.com/la_plaza_del_diamante_serie_reparto.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/blackberry_classic_q20_price_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/93554303880.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/badmaash_dil_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/signature_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/good_morning_beautiful_whatsapp_status_video.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/3939876471.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/negibilavebofovoxum.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/putelazasu.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/zebog.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_off0000e6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FE 5688 bytes
SHA-256: c94d07961f7d46f0843d7053c32c3570a414b493b33b00a8f4dedc3d1892c909
font_01_sfnt_off0000fa57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA57 10868 bytes
SHA-256: 50ffa7a85fbe6017e66cf181b0386532b155d5af9e1c076753a523f10e688ea1
font_02_sfnt_off00011f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F61 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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