Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ac7f7e09fb578a9…

MALICIOUS

PDF

70.1 KB Created: 2020-11-26 10:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f269bbeea5767df2653b77732d75337a SHA-1: bf653097a6da73d01314af2507209fae090a5363 SHA-256: 5ac7f7e09fb578a92985cb920caa4f745b3ba735f662400ec74cd8be0dbd6747
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?utm_term=kuulaire+manual+espa%25C3%25B1ol'. This URL is the primary indicator of malicious intent, suggesting a phishing or malware delivery attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious phishing lure.

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/strik?utm_term=kuulaire+manual+espa%25C3%25B1ol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5f9d98ffbd006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376598/normal_5fa0e6af49354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_5fb8a1a7a1f93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449614/normal_5fb43635b89b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489247/normal_5fb97d41904d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425217/normal_5f9ae3002be52.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/a0b0ce7e-259a-4a31-94ba-fdbb323b11a2/lesemivosudixar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4547bc65-b205-4bc9-a66d-d7f8ebfa4bbf/sorifusuxupulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8760ef8c-e32b-48a1-934f-34ee44963904/lg_vn220_phone_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/927a1aa2-7833-431d-84e8-e331c5af1b70/jevidazabaweta.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/54690613577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2458ed18-5957-4fee-92f1-b59bec21b5c9/fejuxadimitigi.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_off0000d60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60A 5144 bytes
SHA-256: 097942f89d8af8ab9d234b710d205ff07b6259f262870af5c3c617c0df22d012
font_01_sfnt_off0000e734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE734 10096 bytes
SHA-256: 8a5e9793a20c60f788e7f5cd3492b6237cb112038b2a297a225eabeff6240e74

Open this report in the interactive analyzer, or submit your own file for analysis.