PDF malware analysis — malicious · 89b81d205682f1d6

MALICIOUS

PDF

70.3 KB Created: 2021-01-19 14:15:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03

MD5: 5446fb39452581f78291dbd7e30d18fb SHA-1: 99e79c7992521903ab00183f2c2221efadebdb2f SHA-256: 89b81d205682f1d66eefb268a8628d19a6f77b122a1075070ae9464a12850f59

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of external URIs and a high ML score for maliciousness, further supported by ClamAV detection as a phishing trojan. The document body, though heavily obfuscated, appears to contain keywords related to 'Santa Rosa FL Clerk of Court', suggesting a phishing lure.

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://trafffe.ru/123?utm_term=santa+rosa+fl+clerk+of+court PDF link annotation
- https://static.s123-cdn-static.com/uploads/4454172/normal_5fd07015e0fb1.pdfIn PDF document text
- https://site-1167988.mozfiles.com/files/1167988/steam_link_controller_overlay.pdfIn PDF document text
- https://site-1178369.mozfiles.com/files/1178369/58910758754.pdfIn PDF document text
- https://cdn.sqhk.co/mosugukasiba/YlkheyQ/vusikibu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://diveruwafulebes.epizy.com/48621893522.pdfIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/27328733122.pdfIn PDF document text
- https://s3.amazonaws.com/napoledunadigo/sifepuwidogisirige.pdfIn PDF document text
- http://jeragapa.epizy.com/zibat.pdfIn PDF document text
- https://s3.amazonaws.com/kigavanus/6775272387.pdfIn PDF document text
- http://releboxodaw.rf.gd/bagivisi.pdfIn PDF document text
- http://wirirarosutuki.epizy.com/40413648677.pdfIn PDF document text
- https://s3.amazonaws.com/donarepemi/cookery_classes_listening_answer.pdfIn PDF document text
- https://s3.amazonaws.com/vokeri/gingival_enlargement_case_report.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d8cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8CC	5040 bytes
SHA-256: `9e5d6a4e5be28c2d51ab4ed55b0f2c88e49d0cab4e0966a77f64b30693bc7e28`
`font_01_sfnt_off0000ea02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA02	10012 bytes
SHA-256: `3ca472861a35fdbbcfae07128e196a25970289ae65f0d11479c74a594a0d47a6`

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