Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5a9db1c59d4cf9…

MALICIOUS

PDF

67.1 KB Created: 2020-11-20 11:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2dea7a85f3ac2bc9a86b8e911f0d9627 SHA-1: d39655b0599c96a1dcd2be5a7819d78f25284a25 SHA-256: fe5a9db1c59d4cf9cdac459a6346f8cd61f97182c4a2b1696c213ac36fa9f7b0
96 Risk Score

Malware Insights

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

The PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely for phishing or malware distribution. The document body is heavily obfuscated, but the presence of the external URI is a strong indicator of a malicious attack pattern.

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/strik?utm_term=gay+porn+torrent PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8f43b119b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f97ff0a6dd50.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jasamejug-jenutuzudemeluf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423188/normal_5f972b0e313e7.pdfIn PDF document text
    • https://gudosotavuna.weebly.com/uploads/1/3/4/7/134722070/9483609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416791/normal_5fa2cbefdc1d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5f8fe44e69b0f.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/fotetuzepo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b0f2be8f-5126-48fa-8071-2a47b8873451/ropimutefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edaea968-e51b-4e86-b7a9-37a9b8681472/8924885381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43ed111f-b767-4ff8-b806-f39d67247e32/kururavunabid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfb64c34-4c34-442c-8132-950490e4ca60/47605793564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cc090f1-164a-469b-9043-f2ac5e1436c9/finale_nota_yazm_program_trke_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee202c33-696d-46e6-ada4-a8d3a6632f24/55170566379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da1cc29-d4a8-4726-9252-6b710982bfea/52177995437.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E6 4476 bytes
SHA-256: 0b979f7a01d2ce4fd12c6ccf5a287960dd590cb821dacd86b4e3c081bc78e7ee
font_01_sfnt_off0000d028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD028 9960 bytes
SHA-256: 5ac64e2092b7880813ef16618264ea34881adb54503259aa5205ce79ec91a215
font_02_sfnt_off0000f1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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