Malicious PDF — malware analysis report

Static analysis result for SHA-256 a16d174586e10b74…

MALICIOUS

PDF

72.0 KB Created: 2021-02-21 20:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fdebcfdda71cc4e66b38e906360a4aa7 SHA-1: 0ee53e53a4352d0d58bc1a1e61cccc835be63d5d SHA-256: a16d174586e10b74796198d9065197909be22e86159811a0dc83c69377776d23
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a phishing domain, suggesting an attempt to redirect users to a malicious website. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=do+beats+studio+have+noise+canceling PDF link annotation
    • http://lunesygets.xyz/777_casino_reviewptw8l.pdfIn PDF document text
    • https://cdn.sqhk.co/duzixulok/fSgdUgc/51575961510.pdfIn PDF document text
    • http://ro-shop.space/jijurolunibubokaci4ld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_600cc2ddd2529.pdfIn PDF document text
    • http://virnet77.ru/fodorepemifexemedarehqygv.pdfIn PDF document text
    • https://cdn.sqhk.co/tategupet/aOhhfr3/93193228615.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/jfYjmjc/faniduvinobelekal.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/XDvfqhh/71053104539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379474/normal_5ffea523af805.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461780/normal_5fcf92b915cfd.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/1Obhaii/rofabuwizelezapoduvatag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC11 5304 bytes
SHA-256: 82eded355e2d0b338ebbb6aeef8e7ebc103267c84a130f452c86aa492568a7d4
font_01_sfnt_off0000ee23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE23 10920 bytes
SHA-256: b3968ac7f36a2d74dd3a8f1c70fe7477a4a3b0a7172c609a4d7af96ee310b565