Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d104cc4adf3bac…

MALICIOUS

PDF

76.9 KB Created: 2021-02-06 18:28:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d4e2f5f5c01838e2e20a9fea09c8dd7a SHA-1: d53684ca374bac4aa633505de237795f82b07033 SHA-256: d0d104cc4adf3bac6b6ee22922ca583e285cc7376dfe378d58b8a82bd92f7920
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 0.9997

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://yafferge.ru/aws?utm_term=ikea+double+duvet+sheets In PDF document text
    • https://static.s123-cdn-static.com/uploads/4383471/normal_5feb125d4bd16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428342/normal_601abffa86d4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496402/normal_600bf6afb31ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481515/normal_600074376ffcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447884/normal_60199045d4639.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413223/normal_5ff2c870ac1e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419236/normal_5fe4efce8c43f.pdfIn PDF document text
    • https://jebopisozezir.weebly.com/uploads/1/3/0/7/130739828/dd0845bcc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496592/normal_5fca5d459be30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dukexajuj/wasteland_survival_guide_mirelurks.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/33860760128.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/muvotoduwun.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/luwusatidativegasax.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE712 4744 bytes
SHA-256: 663b9607de1abd030536451621b69f5b0368183469971a3e3a3c9a035472d00f
font_01_sfnt_off0000f73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73D 9816 bytes
SHA-256: ab59296afa8f2d6333378d4dd17fcd5b166f7b1b5794662faab1f01d2125170f
font_02_sfnt_off000118b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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