Malicious PDF — malware analysis report

Static analysis result for SHA-256 93667a533c508c06…

MALICIOUS

PDF

83.7 KB Created: 2020-11-18 15:12:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: af6a41b7b755cedc31462b070877ed0d SHA-1: 13775fd33013c6e1f1205c3bff18ce36e8dcadb0 SHA-256: 93667a533c508c069921283123cab67abb0b03780b5a869bb940c1668d7b296e
244 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including ClamAV and an ML classifier. It contains a significant number of embedded URLs, many pointing to disposable hosting services, and one specifically identified as a malicious redirector. The document body is heavily obfuscated, but the presence of numerous links suggests an attempt to direct users to external, potentially malicious, content, likely for phishing or SEO-based traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/aws?utm_term=dante%2527+s+inferno+pc++game In PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/4165744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392861/normal_5f9e1a7b1ac12.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/2885265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_5fab231c82eb5.pdfIn PDF document text
    • https://xutomanuvafara.weebly.com/uploads/1/3/4/3/134345830/nopesesut.pdfIn PDF document text
    • https://pimakiwukusa.weebly.com/uploads/1/3/4/7/134712386/defixoseti.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/lokujevu.pdfIn PDF document text
    • https://puzujesojanigo.weebly.com/uploads/1/3/4/5/134504435/kapudujijepunuzinuwu.pdfIn PDF document text
    • https://subefivu.weebly.com/uploads/1/3/4/6/134688636/4f7c4003044b5.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/fifomi/ada_county_jail_inmates.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/kaabil_full_movie_720p_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/59596939079.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_off00010b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B49 5336 bytes
SHA-256: 821cd5e76678c73ed6eaad006a714e6d706efd98c0b9c683402c90ada97fe7fd
font_01_sfnt_off00011d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D6E 10580 bytes
SHA-256: 7f45cc75516c72b123f205b7181b4de1843d88e491ecebdec702d83154b812aa

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