Malicious PDF — malware analysis report

Static analysis result for SHA-256 230ee21ce7323be5…

MALICIOUS

PDF

39.5 KB Created: 2020-11-05 16:20:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8e61f300b54b43e1dc4639401e17fa68 SHA-1: b709019efe30469d0151b741644834f2196025be SHA-256: 230ee21ce7323be59792f764ce7faed79c3e4d5bd9bb124fc5fbaf2cb79d9192
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, with a primary malicious URL identified as https://trafffe.ru/aws?keyword=uc+merced+sona+register. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a link farm or redirection tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=uc+merced+sona+register PDF link annotation
    • https://velizixevapejaj.weebly.com/uploads/1/3/4/3/134376636/gupubarudonena-fixefixinalemu.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/87c690d.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/776913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405929/normal_5f91e66bc9a4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f9f288f9b608.pdfIn PDF document text
    • https://relowuforobelo.weebly.com/uploads/1/3/4/5/134528439/2290049.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/c3f1dfe.pdfIn PDF document text
    • https://jibametugo.weebly.com/uploads/1/3/4/4/134486067/110c176bf6fc.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/8cbd9155-69f0-42f2-b11f-1632c4e13adf/25399910423.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/fopakilezozidot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/298f063d-802a-4b05-be35-8855c8a612eb/71911835285.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/advanced_aseptic_processing_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/wavaxejagap.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/lavebokigeraxavirapakumob.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/agile_methodology_types.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_off00005bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDA 5216 bytes
SHA-256: 45531673aa846be6916bda1ee9a1105375060b2c66bb616783e8ccdd67e78922
font_01_sfnt_off00006d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 10664 bytes
SHA-256: 7e3be0c0afd4966889a19f1c4394ac64eba2d46d1ac040944169d59b505251cb

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