Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7ee3426a05a641…

MALICIOUS

PDF

66.0 KB Created: 2020-11-09 20:04:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1ebbe386e3473ec67412e38ccf3ea554 SHA-1: 2184a4fd6f61fe02a9399475c537f9fb6c555941 SHA-256: 1c7ee3426a05a6418cbedc1d6ce790a7199e55e6f8b8834c03a09e72a44adef3
214 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 embeds a large number of external links characteristic of an SEO link farm and 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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?keyword=setting+in+the+count+of+monte+cristo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375891/normal_5f89f63071903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5f8a5b12820f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_5f9c84e968b76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390057/normal_5f999461cd442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394068/normal_5f936bcb9f5a7.pdfIn PDF document text
    • https://gupupekulumo.weebly.com/uploads/1/3/4/1/134108922/mijexipinudine.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/6a8f7dbb-c562-4565-9873-376d8c1e7231/carla_dezi_miss_reef_2004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d339ece-b1e0-4d6d-acfa-ed3cc958267d/17096696834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/526db24d-f65e-404b-8902-ef237a036620/gemoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214f8064-a306-4fd3-a43c-2d76fdd34747/fruits_of_grisaia_yuuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07b35f65-0000-403c-b961-1157574cde32/sudene.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 8

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_off0000c604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC604 5156 bytes
SHA-256: 43a89bbb902572815a3c2ac960dcac8e8192a8b44fe650e6add425a10379dc87
font_01_sfnt_off0000d770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD770 10900 bytes
SHA-256: 0116f5c3de6c91b3daf0d190fc97378f507303f0060ec26ee4627ddeaa882bb7

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