Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5837844a9923dd…

MALICIOUS

PDF

74.7 KB Created: 2021-02-24 05:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cefa1936086403cf3cbce372014458d4 SHA-1: e4ab5fab4a6d3790ef401568dbffb4a782446893 SHA-256: 3c5837844a9923dd81592d08f91348f2f9f9db444f487be404e10a48fa428d40
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://jacksth.ru/strik?utm_term=when+will+the+next+hunger+games+come+out PDF link annotation
    • http://fibilif.iblogger.org/wuzafobimiga.pdfIn PDF document text
    • http://batmbatm.ru/ts_hall_ticket_2019_sscvsw0k.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/Piihi3F/mukeminesarawigad.pdfIn PDF document text
    • http://vamoktin.ru/telavef0uqr3.pdfIn PDF document text
    • https://cdn.sqhk.co/gevajoke/Ujgjghc/viberiwis.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/ifgiaie/twisted_root_dallas.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/gajabedafot/70939988791.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/lagu_the_beatles_abbey_road_medley.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/college_website_templates_html5.pdfIn PDF document text
    • http://ralopokizuneza.rf.gd/wonoralixivatemuwamiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/40939581809.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/55292847536.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/56367090894.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/53172202591.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/brain_games_nat_geo.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/39322029900.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/lunisejekinixozek.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_off0000e6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F2 5388 bytes
SHA-256: 14fd6a8aeadc3a6d13f937f9468f9d8d99c2443cb12a9596b9126764328d0b21
font_01_sfnt_off0000f937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF937 10548 bytes
SHA-256: 9dac368fbb1de3c8cad55c89f1d71eb430527499e21ea27b0eade7ab53d4d38c

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