Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec0e316bec806e5…

MALICIOUS

PDF

75.6 KB Created: 2021-03-05 00:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 47e56e5ac7d6a15c8e812ae1ac3dbcc8 SHA-1: 27b8508e98dad9cdd6ff792a3a077a02cda8bfd5 SHA-256: bec0e316bec806e5934e801715cc6c286e21dadcf7e55b99501ba59ef169d756
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm pointing to 'http://6gusevshop.space/37301879133lpwgj.pdf'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for concept art, suggesting a phishing or malware distribution attempt. The presence of multiple external links and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/strik?utm_term=star+wars+the+force+awakens+concept+art PDF link annotation
    • http://6gusevshop.space/37301879133lpwgj.pdfIn PDF document text
    • https://xebolefijepipol.weebly.com/uploads/1/3/0/7/130739937/4133858.pdfIn PDF document text
    • https://bujakisuka.weebly.com/uploads/1/3/2/6/132695398/zajuf_zabifubovili_mavojezibikados.pdfIn PDF document text
    • http://spainsale.pro/noticias_telemundo_52_californialbt5q.pdfIn PDF document text
    • https://wokawopirajer.weebly.com/uploads/1/3/3/9/133999547/kilases-laxavufatavufip-sekepusoz-kajutumu.pdfIn PDF document text
    • http://vaxenovutejuzid.sportsontheweb.net/watch_citizen_eco_drive_radio_controlled_at9030-55l_steel_man.pdfIn PDF document text
    • http://smartycredit.info/200415853687rghf.pdfIn PDF document text
    • http://bumufirila.mygamesonline.org/best_nature_for_single_strike_urshifu.pdfIn PDF document text
    • https://nuxowodevuj.weebly.com/uploads/1/3/4/6/134609076/7463386.pdfIn PDF document text
    • http://wwbook.org/60461534049pz9dk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_2d23db98729f4f5ebd81eea73d7d3a95.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pigolo/iap_immunization_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/aubin_grove_primary_school_uniform_shop.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/wijipav.pdfIn PDF document text
    • https://5663e088-3595-439c-971a-5873693bee35.filesusr.com/ugd/e98895_cf4994c82c504bdbb2bde15eddcec7e6.pdf?index=trueIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/titulos_de_credito_regulados_por_la_ley_general_de_titulos_y_operaciones_de_credito.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/calendario_laboral_madrid_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/adding_fractions_unlike_denominators_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/wokukaju.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/centurylink_email_setup_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/46676591168.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/38902667958.pdfIn PDF document text
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_f953b14c590e4f1f823202096e4ed582.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/opmanager_admin_guide.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_off0000e939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE939 5328 bytes
SHA-256: 15eab01cc6ae2574be8358df71ed7fd4932385cf84f9c4343a487ace70065584
font_01_sfnt_off0000fb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6C 10948 bytes
SHA-256: 5b480dd371faec786cecde6d9a8266e9ce14e95038f8c9050046c2341e447740

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