Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b0abdeba0deadd…

MALICIOUS

PDF

66.7 KB Created: 2020-12-05 22:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: af59b73e2fbc6751f0e2c6da41d5e446 SHA-1: 236e95ad5cd43f75eeeae3a0e11b78de57be0048 SHA-256: 06b0abdeba0deadd1703ca4197e3f79271469fd5c0b3b0e4a9b92c36629f5f8e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL is the primary indicator of compromise, likely leading to a phishing page or malware download.

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://gettraff.ru/123?utm_term=removing+a+curse+from+an+object In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fa0e9596e12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446759/normal_5fa75a9e1695f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485172/normal_5fba8bb47a724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5f96d5f668481.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/1493621c-4843-41de-a8ff-9bc184c3b641/84154962644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/939e0cfc-3c55-4309-996e-c5eebb6eb251/ucsd_health_beat_advising.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5aff7a13a450bab152330/t/5fc9a12341142a3c4b3966de/1607049509282/best_passport_photo_studio_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f10959d2-b942-49df-9329-dc68b599cc03/33029246308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b776bc1-70b7-4fac-b945-d791277cd567/worixukirupilonudisiwur.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/calendario_abril_2019_chile.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/zugupudufonadugosujitudom.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14f4aa13a450babf6e3a6/t/5fc74a951d689b68bf98dc0f/1606896279571/bogawovapujugodinef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8489457c-d9b6-4dc4-82c2-8bdf9d1fbaf1/52137035388.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_off0000c96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96C 5452 bytes
SHA-256: 474d5dc50548af1278d280c21ad30e1f0a78ebcc71fbee49c200aa114a6120ee
font_01_sfnt_off0000dbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFB 10056 bytes
SHA-256: 8ba97d7b0df69ce3157b0d87d5210b2b41b00d1b7c8da2bd9058a02fe9e4720d

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