Malicious PDF — malware analysis report

Static analysis result for SHA-256 769cb5f7a6902414…

MALICIOUS

PDF

70.3 KB Created: 2020-11-11 17:32:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8ef3b2eccd89af93d1cef313fda8e305 SHA-1: bc91bac326e4db99c04e787d011e3367cd0938bb SHA-256: 769cb5f7a6902414cb6f40caae2a2bb2ce7fac0f00e93ad2f336f82cce948e8b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/aws?utm_term=fundraiser+donation+request+letter+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f929eee060cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464314/normal_5fa499da16433.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/98288f9d-256a-4997-b454-e03a01c256ea/womexar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56cc8fe-d910-4a20-8cd3-2c9325e26007/gitulatazepepekajomep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61a7228-4af3-489c-ba91-219e681f21a7/web_style_guide_4th_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce8ff33-cff1-4eee-88d9-5d97987ad8be/90736929331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e05cbd-9dc8-4b9b-b148-09e8aac33c01/xunoposipivogipenulujo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/158546e6-ee59-4ec8-beb4-ce802515b899/z_fighting_skyrim_se.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381b07e9-68fa-4762-9f4f-b2bcf1905500/73891049815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f25ed48a-ffdd-4798-80f2-7f10599f4d49/66184556021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc55e2aa-46eb-47d8-b321-783d78acb91c/cricut_easypress_mini_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4877250-8383-4859-a561-12b865848606/sinixijobe.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_off0000d8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B0 5188 bytes
SHA-256: 162de0fa22253d53a4e24655dcb21cd43acb009945ebca506eade84658668700
font_01_sfnt_off0000ea3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 10088 bytes
SHA-256: c4ea8074937752d5875ca7790f8cd57bc9aab0b2bf1a80f0cb9d088c96483296