Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f19df2e0a5996e…

MALICIOUS

PDF

74.1 KB Created: 2021-03-03 00:41:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 96a5ce6765580bd288d1a404b1836a2c SHA-1: e2d4df107c713bc3c8f8f6f3b0ee483579f9f34b SHA-256: c2f19df2e0a5996ee6a62429639242fd8e4e959f1574259682ae72fdb914a9bd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, identified by heuristics as potentially malicious and flagged by ML classifiers. The document body, though heavily obfuscated, appears to reference technical information, suggesting a lure to trick users into visiting the malicious URL. ClamAV also detected this file as a phishing trojan.

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://gimoguvi.ru/strik?utm_term=arduino+mega+pro+datasheet PDF link annotation
    • http://sibatike.getenjoyment.net/nopiziniteredavovipipobu.pdfIn PDF document text
    • https://cdn.sqhk.co/rizakumer/ifGjftm/u-_boat_simulator_apk_full_no_license.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/VjPXIhQ/monir.pdfIn PDF document text
    • http://rumudasejozekes.iblogger.org/29874082433.pdfIn PDF document text
    • http://nebofonuve.mywebcommunity.org/86500727166.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/i7biidy/30340348487.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/gotitibekovi/celebrate_recovery_materials.pdfIn PDF document text
    • http://memokikadu.rf.gd/zojeleroniviwoju.pdfIn PDF document text
    • http://nedajazamofo.epizy.com/61148516310.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/android_pie_vs_android_10.pdfIn PDF document text
    • https://s3.amazonaws.com/musokejixami/tufaponerufanom.pdfIn PDF document text
    • http://kunerev.epizy.com/387531144.pdfIn PDF document text
    • http://darajakejaxise.rf.gd/90218680757.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/92656638728.pdfIn PDF document text
    • http://gowejolu.rf.gd/formalits_suite_cession_fonds_de_commerce.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_off0000df38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF38 5332 bytes
SHA-256: 6ab109c8c2e894c485684f5766d1978b0f35de4ed27d11b086c953939453f855
font_01_sfnt_off0000f12b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12B 14956 bytes
SHA-256: 508e48e2b4db50ace55e465708064e443f8bae8a9b8e73ffd694883f5069c408