Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bea529d3ff38c44…

MALICIOUS

PDF

69.5 KB Created: 2020-12-24 20:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: eab604fde9ae56b9e00ba7b56bd3444a SHA-1: 9f81c19118b993ca7959d2d3bfc9998af6b7a587 SHA-256: 3bea529d3ff38c44ebd15996824e90d1aeb00015f529cb11c797a86277c71ab6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=francis+bacon+metodo+cientifico+resumen In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402289/normal_5f98312ba0b3f.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumula/0iggcxK/wezolorijetaguvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_5fd63abd4e403.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/ZTjaujH/shark_ion_p50_ic162_lightweight_cordless_upright.pdfIn PDF document text
    • https://cdn.sqhk.co/fakobijo/jhhcxjf/jupitikuro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5fe3ec7654119.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fd7866ce8f9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500001/normal_5fc6557860300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fc24b87ee8fd.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/394c19b5-eb5d-4a2b-9c2f-c5481ef9cd2f/sword_art_online_code_register.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed9f122-e0b0-4d5e-98ee-23b1aab861c4/roregiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f5d3912-f639-45f8-aaeb-a8b4d7ebe01e/31784315485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16b6978f-4c89-4fe3-935d-c59fdbda298e/similac_ready_to_feed_2_oz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd3ccbb-db16-4243-ab8a-35f84153459d/4941102499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2beab7-a24c-44ef-a797-b64587b17d84/46659519832.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD569 5232 bytes
SHA-256: abd4f73e2c2e2ea57be6937ce015ed5bd6180c9d778b0db56f3ca025d696d2ec
font_01_sfnt_off0000e718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE718 9948 bytes
SHA-256: 1af4aeaa7783b5476f86080691853a615486a77fa6a1bb83f3b984be250929d3

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