Malicious PDF — malware analysis report

Static analysis result for SHA-256 d123abec03afe391…

MALICIOUS

PDF

68.0 KB Created: 2020-12-14 01:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 56691f3a7f30519df2cf00b34ee43bd9 SHA-1: b879f22631314e5d52afa2ff523ea4eb3a876df3 SHA-256: d123abec03afe391842af1e931f2a83d77c36cd116b720ac8d1adf94ef7c84ff
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files and a primary URL associated with movie content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafffi.ru/aws?utm_term=antariksham+telugu+hd+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413566/normal_5f95f6b473868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_5fbb338ce4f90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5f9e3c1bd2a67.pdfIn PDF document text
    • https://gugimamerid.weebly.com/uploads/1/3/4/6/134606591/1ffa336.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476566/normal_5fb33be8b897e.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/4129340.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc11e11ec917750a3d92ddd/t/5fc631569ee0f32b87270f1a/1606824279454/celtic_cross_coloring_pages_for_adults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6704c680-0517-4c50-b0f7-621774a30814/the_moral_of_the_story_the_little_red_hen.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/diwawujovinemamupowamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d6b6514-2387-4d67-8a5d-856c94cda704/putowi.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4B 5352 bytes
SHA-256: 6b9633866d86f4fc9f36e2f636df34f0a37167f4c963d1ac2f233e53ebd9d296
font_01_sfnt_off0000dd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5B 11648 bytes
SHA-256: 3cbe4011ccbe2bb77538929a431c3fcf3b0ed30628c8cbc6c7cf85442289a873

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