Malicious PDF — malware analysis report

Static analysis result for SHA-256 7902a0a387998aee…

MALICIOUS

PDF

65.8 KB Created: 2020-11-22 19:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 483e79808b34e17a1c96154a95b25fdc SHA-1: 88377f7a1e2c539b04ca29683980d602ca60c8c0 SHA-256: 7902a0a387998aee637b0dd04586b0c45c51022bc862d41e29a1a7fa13357592
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 infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The ML classifier also flagged this PDF with a high probability of being malicious. The embedded URL is likely intended to lead the user to a phishing or malware distribution site.

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/aws?utm_term=marvel+heroes+3d+wallpaper In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5f972371f3ad6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f932e0be6fae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f89499a1f72c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_5f8d0436f1477.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/39bf7097-6347-493d-bafe-0c4aa3a1ef16/introduction_to_management_science_12th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079dbc21-3835-4614-b5d7-9c91cc5dc052/zaretatado.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/course_completion_certificate_template_powerpoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7dab2b7-248f-4f5a-ba58-9714aff9961a/10626408566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c9a4f6-1b9a-4165-bd60-808cf8d86729/royal_standard_of_ur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d56dd29-205f-49bf-b545-2837f4d0a334/78386428978.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/android_auto_aggiornamento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f692057a-b836-4a68-b243-ef9051611531/zevuwun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ca70c4-0fba-4a18-894c-5c85963ed893/is_david_ortiz_divorced_from_tiffany.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_off0000c458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC458 5368 bytes
SHA-256: ca5c9fdabbf6581a8a77661de310676d751e7497d7176b4f39b7d6d7a41e4d42
font_01_sfnt_off0000d6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B2 10612 bytes
SHA-256: f6616073f6f2242ae1dd6bd493e9208364a892e833d24151c0b3eb9489ea656c

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