Malicious PDF — malware analysis report

Static analysis result for SHA-256 2275cb69d3e7420d…

MALICIOUS

PDF

65.5 KB Created: 2020-11-28 10:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3536d39f09e67f4e769007faddcb0112 SHA-1: 9561691219da5f0540cc04afdd383dab99d3366f SHA-256: 2275cb69d3e7420d7ebc36ec9a399a31b2c20d4592243f82bb773dc399770dbd
154 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 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 0.9995

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=accents+in+spanish+rules In PDF document text
    • https://virenogapugutu.weebly.com/uploads/1/3/4/6/134635416/7573669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393363/normal_5f9a3c2bdf56a.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/4af6af8969b2be.pdfIn PDF document text
    • https://jijiluvupetopib.weebly.com/uploads/1/3/4/6/134644839/220ae15.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/d5dbe17e-fd97-4cca-8aac-f5e44ef776db/wopogowot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/985f8522-ba89-4646-8075-1e25bd7329b2/jokegona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0382e61f-fe5d-4d0f-97fd-3338b99397ac/2720404142.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/wojogojidumuginuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c555fdb-845e-4875-8e0b-5064fde9ce83/pogufanotowigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f948a5-750e-4f99-bbe0-15c16d17cd82/eva_rueber-_staier.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_off0000c4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4ED 5008 bytes
SHA-256: b828a67f077ef2d80200ba631777de0dc8570334d198e705a12e699db98e4d10
font_01_sfnt_off0000d5f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F0 10996 bytes
SHA-256: f102ef076a8163319532f4c98a102f62ac9b4255eb7e8a127899cb219afd0259