Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a960ba6ecb4f33…

MALICIOUS

PDF

91.0 KB Created: 2021-04-15 09:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c92a553b161fdaa17966d1cd34962b75 SHA-1: 24d6bffbeaa61669e120a4840cbc291dc3504a16 SHA-256: d9a960ba6ecb4f337ae366e6b4dee088b2bc3f39d1bae78425971d9de7a43868
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs pointing to suspicious domains, one of which is directly referenced in the PDF's metadata and heuristics. The document body, though heavily obfuscated, suggests a lure related to 'breaking dawn release date', likely a pretext to direct the user to the malicious URL for phishing or malware download. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware distribution attempt.

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://lozipotod.ru/strik?utm_term=breaking+dawn+release+date PDF link annotation
    • http://busforpay.online/68568766570xjti9.pdfIn PDF document text
    • http://sks-expertiza.ru/tipiluwosiwulatubebusns3cv.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/nubikemojomiauo5i.pdfIn PDF document text
    • http://converstarget.ru/884414917833umcr.pdfIn PDF document text
    • http://palitra-cveta.ru/fetanelufusexemimetixifut0grxc.pdfIn PDF document text
    • http://kvrovk.xyz/xonedagemedarabapolat3zg2b.pdfIn PDF document text
    • http://prostosite.site/cuanto_vale_un_milimetro_en_centimetroscootr.pdfIn PDF document text
    • http://homeolimp.com/casio_5146_ga-110rg_priced12ef.pdfIn PDF document text
    • http://elerctum.org/ejercicios_calculos_estequiometricos_4_eso_con_solucionesufbf7.pdfIn PDF document text
    • https://cdn.sqhk.co/mojubemuwek/dichcgg/26924486746.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/intel_corporate_brand_identity_guidelines5gwsq.pdfIn PDF document text
    • http://intekzafast.online/leverage_role_playing_gameye5zk.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/Uhhihje/komusotemik.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/vapelurowar/vidmate_app_update_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/accouchement_prmatur.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/13627941006.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/15621306667.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/zuduzinosulafuroxizanab.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/lanidavexujimujixopejan.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_off00012650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12650 5200 bytes
SHA-256: 9ae3ed11aa851052fc8b439e7748560e879845b3d2ec1c563ed3936900e08926
font_01_sfnt_off00013822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13822 11468 bytes
SHA-256: 8b175415fcc69d89f7de73713b7fa33efb0f3d51e76be7c6ebd6accdf69938ea

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