Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d6d15f52176d9c…

MALICIOUS

PDF

79.0 KB Created: 2021-05-23 04:28:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2c90c6f19237a8b0bbde79dc7e4109dd SHA-1: ef657c2b77cbbe1035512e58f539680587124178 SHA-256: e3d6d15f52176d9cc187b8d7449d0a4a4dc65b2046bb8516b6c936eeab1deb3b
96 Risk Score

Malware Insights

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

This PDF was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI that directs users to a suspicious domain, likely for phishing purposes. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URIs and the malware detection strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=what+colors+do+holland+lops+come+in PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486745/normal_606ad057ef014.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495685/normal_60085af83987e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369793/normal_5fdf5300aa12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418191/normal_6029830a87216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389358/normal_5fe9135364c3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384167/normal_6006e82363cd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_6067183500a64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493920/normal_604b28f98c522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_605ad94e21227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405184/normal_5ffd3a6ecb0ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498345/normal_60481a8ccfb6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_601448942d3ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487906/normal_6050e8be7042f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470221/normal_60463fce61fb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_6064163106a28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f7f653e-8119-4982-858a-93abdf8ced38/how_to_read_tarot_cards_for_beginners_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24d5ae21-6421-4d5b-bd89-ebd16ba3df43/93460339599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfa99275-bc43-48fa-be54-945e935170b8/1488446252.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_off0000f8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C0 5324 bytes
SHA-256: f9ad86a50d58d08d7b892d0b9247e768af62ccf649fe534d703fe41447d9ae8a
font_01_sfnt_off00010ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB9 10628 bytes
SHA-256: 16b0d3d4e4f3cef007e7bf7ce718268723f02c84a6275ac8c7d0e1a234eb2ba0

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