Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cc099aacef7b17…

MALICIOUS

PDF

64.3 KB Created: 2020-11-18 23:37:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d81093ab22b21f8fb70172a666c36300 SHA-1: 2b0eb185be21dbc6f806fa6e1b65185109eef880 SHA-256: e0cc099aacef7b1721e47766e2cb5af5fb5cacd314bc1e6830ac570e5192d17f
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 multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of external links, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of malicious links and the overall structure indicate a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/strik?utm_term=d%25C3%25A9composition+en+facteurs+premiers+e In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f8b787c79cb8.pdfIn PDF document text
    • https://lorebigida.weebly.com/uploads/1/3/4/3/134377432/4120788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381108/normal_5f907864a237c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376087/normal_5f8fe3acb1b66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5f8cab4741fd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5f904c316968b.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/potevivikoxuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_5faba45d74a21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381289/normal_5fb4d7669d304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369654/normal_5faf777806a5c.pdfIn PDF document text
    • https://waxojokizubow.weebly.com/uploads/1/3/4/4/134482073/5219121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/73263046001.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/important_historical_events_1980.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_off0000bd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD5F 5272 bytes
SHA-256: 505ed304e748bd63d04b525905d656547bb12e10abf25f81224e389af2fb2de5
font_01_sfnt_off0000cef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF6 11160 bytes
SHA-256: 73040e996842a52c02cfe074242aa3e9254383b5974dc4756c07a9b2bc8fc494

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