Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4790305b54c4868…

MALICIOUS

PDF

61.5 KB Created: 2020-10-30 14:55:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 372a2412cb4e22f892f58a9fbc5eebc9 SHA-1: 9b9072efe46c61b134f441bdab064071e76e2bb9 SHA-256: e4790305b54c4868ec769d97d94bdb071365b73aec046e260af33f7b2d98442c
114 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://gettraff.ru/aws?keyword=the+glass+menagerie+pdf+scene+7'. This indicates the document's primary purpose is to lure the user to this malicious site. While no scripts were explicitly extracted, the presence of PRC/3D content and embedded URLs suggests an attempt to exploit PDF vulnerabilities or social engineer the user. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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.
  • 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://gettraff.ru/aws?keyword=the+glass+menagerie+pdf+scene+7 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f88bae7eca40.pdfIn PDF document text
    • https://sefedajexoxoj.weebly.com/uploads/1/3/4/4/134479396/5850f22ac33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375199/normal_5f8e18024f50b.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/2561762.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/tizowodifi/emerald_tablet_billy_carson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61e3c37-f388-41f3-95e4-90402d46b1d9/vipake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/902c97ee-d817-483f-a5f7-1f889f16f8ad/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2786/3965/files/veloxudewon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abfa9521-3089-4e67-8bb8-e0c26efe655d/modals_of_obligation_prohibition_and.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_off0000b52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB52F 5600 bytes
SHA-256: c6cb5fc70dac0b6932b5981f81dcba73e2a97b9ec2379db0606602fb532b925f
font_01_sfnt_off0000c819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC819 9972 bytes
SHA-256: f0792630c77d00b03703744a7f6ef06532661947c4ca9d56ee791019dc770074

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