Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cdad47c6b51d21…

MALICIOUS

PDF

43.2 KB Created: 2020-11-04 04:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 69ad9774bdf05993102cdf2cdbb8d669 SHA-1: 5985428efa900c2c03bce4aaed4b2aa0bfda9900 SHA-256: 59cdad47c6b51d211c9515d87459017269811112cc5c4e5571f2392842bfd1b1
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to the URL https://cctraff.ru/strik?keyword=black+devil+cigarettes+for+sale+online. Additionally, a heuristic indicates an MFA lure, suggesting the document is designed to harvest credentials or session tokens. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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?keyword=black+devil+cigarettes+for+sale+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374686/normal_5f97abd04a92d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369501/normal_5f9bcbdee29be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5f88726dd0632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403259/normal_5f9466dcaf981.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f99f7924ea27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5fa1509886e32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_5f88ad7a34f73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_5f9247d67f6e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391896/normal_5f8fea51cf0a5.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/widiku/xuxudakerarori.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/ciencias_politicas_uba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eba2eed-49bf-4d61-9026-e68e9385ab11/somujuporunifirumadawul.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_off000066a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A5 5364 bytes
SHA-256: 322f7255280c37619bd96679f59c39948ad10e60d588befd9e4f83ba8eb8c988
font_01_sfnt_off00007900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7900 11744 bytes
SHA-256: dda569bd2440a7387e20c05bfcf608a95735cf19011efdddc2cbe01f6db7c109

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