Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf8a4b7a0e944aa…

MALICIOUS

PDF

73.8 KB Created: 2021-02-18 15:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 423e0c1e268f2e575497d2c0901b368b SHA-1: de35cba2115871e6ed338fb4b46ae5900909c31d SHA-256: ebf8a4b7a0e944aa129de50ed2077a5c86a39f2d712951ba7efb54b7a99411ca
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/123?utm_term=how+to+solve+a+rubix+cube+in+2+moves+exposed PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375361/normal_5ff4157244604.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492575/normal_6000bb9cd9307.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/gobomawulirubizibevajuf3xs8.pdfIn PDF document text
    • http://atomyimperial.ru/guess_my_age_puntata_15_settembre_20207uetk.pdfIn PDF document text
    • http://universe1.space/formule_pour_calculer_un_pourcentage_sur_excel7qmja.pdfIn PDF document text
    • http://changely.club/how_to_fix_sheetrock_tape_cracks2b4u0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_60149ebb1dace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407994/normal_602d7e3f84454.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381756/normal_5fe57d7e34191.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/d9GNvgi/55567849374.pdfIn PDF document text
    • http://levantemosaic.com/hodinkee_magazine_volume_27jqf6.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/limewub/infidelity_in_suburbia_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/76398597465.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/62590093655.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/la_pasion_de_antigona_perez.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_off0000e36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36F 5672 bytes
SHA-256: 409435e4f35ce661dda24609ee75f8da22541c5fa0e2d3d1b0d9f0bf1cc0fa32
font_01_sfnt_off0000f6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B4 10368 bytes
SHA-256: da293b8f078a14ccc2fe6e2119a4ca57583d47cac79f8723b5a05bcaa50142ac