Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa459d9fac36d65…

MALICIOUS

PDF

72.8 KB Created: 2021-04-02 09:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 439ff8cd60bc6483599f84265116ecf6 SHA-1: aee0cb50b320f3becf5c5a0940f10f472ae81708 SHA-256: efa459d9fac36d65bff37526b445a53b89679d5f248dc7f496e1697b92bc0c55
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing. The document body, though heavily obfuscated, suggests a lure related to 'The fountainhead group'. No scripts were extracted, but the presence of an external URI is a strong indicator of malicious intent.

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://baarspo.ru/strik?utm_term=the+fountainhead+group PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490738/normal_5feb627f62bc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379384/normal_5ff659da4812b.pdfIn PDF document text
    • http://fulukegoror.getenjoyment.net/86387620177.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417805/normal_5ffaa5eb62453.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365542/normal_5ff3099867fc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_6011607d0b9bc.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/WgfSgjl/xepejapidixiv.pdfIn PDF document text
    • https://cdn.sqhk.co/dikabopagesi/tOwjb4p/my_talking_angela_mod_apk_new_version.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/wifiduxezo/kosekolodarufexeluvomowa.pdfIn PDF document text
    • http://pekowob.onlinewebshop.net/9899627932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e05db15f-dbf6-49df-b141-2ee67b1694bc/genegononuwodagidado.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/busuu_arabic_apk.pdfIn PDF document text
    • http://fopupasefe.rf.gd/tanutomenasigidorakese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f442622-82b3-45c9-bf85-2c035a5e4f31/koxolebadota.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/74709634033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fee83de2-1fa8-43f0-abbf-f4e55c4ed77d/14108220734.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/all_english_songs_2018.pdfIn PDF document text
    • http://bebiwedobavejiw.epizy.com/the_jewish_bible_online.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_off0000de08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE08 5040 bytes
SHA-256: d60172eb27c39c19fbc09035faa008bc0dcddd4d3807a9be4bad77f2163ccd00
font_01_sfnt_off0000ef2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2D 11352 bytes
SHA-256: f54f12abc5e7f501b958922b2fae358672cdbe8c7953314914cfcc54ffe71dd6

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