Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0afa2f741c1d9d…

MALICIOUS

PDF

43.7 KB Created: 2020-11-03 16:20:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 905dcc92fbbfbe14ea1b8c5f79a5f72f SHA-1: 9b1a67d2654fb3489d90009742edf3fb19ec815c SHA-256: dd0afa2f741c1d9df8affb2b8758af00227bc0b6aa2f05cfc661a6ad6afd9ed4
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to disposable hosting services, indicating a link farm designed for SEO manipulation or to distribute further malicious content. One URL, 'https://ggtraff.ru/123?keyword=the+illuminae+files+pdf', is flagged as a malicious redirector. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to malicious sites, potentially as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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/123?keyword=the+illuminae+files+pdf In PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/zanabopixajebe.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/4716175.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/a98506bcb909a.pdfIn PDF document text
    • https://nujidigazinuwag.weebly.com/uploads/1/3/4/3/134318548/gaxopobilolo_matobube_xirusamobowivag.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/6216cb2e4.pdfIn PDF document text
    • https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/fofukuka_diripifaxesed.pdfIn PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/3949771.pdfIn PDF document text
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/nawiz.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/kidutavide.pdfIn PDF document text
    • https://sitiguzesamow.weebly.com/uploads/1/3/4/4/134401829/tapapubebodod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/24004979-30b8-4172-8a54-51e31269e053/bufuvev.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/67327089562.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d239b890-d52d-4c84-b7f2-e15e12eb3dde/25307599284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873d19d7-2b34-4538-9bd5-04983c7a7494/bupeteriwuvare.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_off00006bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB6 5136 bytes
SHA-256: e2c7c9b7a3e84997f5ba534245f17183241d43d96f0bd8d074a4bac57a9c231d
font_01_sfnt_off00007d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0D 11624 bytes
SHA-256: 42d893561696c7969c277cab84ef550f70610056cacf9df32d8dd2ca5afe5768

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