Malicious PDF — malware analysis report

Static analysis result for SHA-256 baebdbf6559efb49…

MALICIOUS

PDF

67.4 KB Created: 2020-12-25 01:22:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f9d35121b410a28f42bdf0b5a7010aad SHA-1: 9ca51c24cf71e5d8b43e1a967d27a1913200a513 SHA-256: baebdbf6559efb49c3693e465ea170dcb9979625fb9827b326954afc4c93095b
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded links, forming a link farm designed to redirect users to malicious or potentially malicious websites. Heuristics indicate that the PDF links to known malicious redirector infrastructure and is part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=latigo+traduccion+ingles In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_5fd2cdf63772b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471686/normal_5fb720ea7eb03.pdfIn PDF document text
    • https://lixezakokigek.weebly.com/uploads/1/3/4/5/134596317/3016826.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473384/normal_5fba3cf378ec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5fda60db9ba2a.pdfIn PDF document text
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/bevimitezobi-sikupesixosadov.pdfIn PDF document text
    • https://dazuzidasepod.weebly.com/uploads/1/3/2/6/132681566/bavivebotomop.pdfIn PDF document text
    • https://tumupapixukuju.weebly.com/uploads/1/3/4/8/134852222/tamidumu.pdfIn PDF document text
    • https://rujikanonige.weebly.com/uploads/1/3/1/8/131872107/kikax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383147/normal_5faa86734a988.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5fca864e4c167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413013/normal_5f98d7adc4108.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460463/normal_5fc45c0017f43.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/pusixa/descargar_neteller_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/74366327834.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/rulexowuwubegadizovoxu.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_off0000cba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA8 5048 bytes
SHA-256: 480b2a5eb8d003768577f46681f4413267e0902ea081039b0d76e6cc0c92b534
font_01_sfnt_off0000dce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE2 10728 bytes
SHA-256: 2f0da1408cdb454df3f17c5e5cb1f8d732af85e3f69cc03d35dd8f38361300ee

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