Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd4ba32459c6c7c…

MALICIOUS

PDF

47.9 KB Created: 2020-10-31 07:20:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6e9768f3cc98e61d578bceab74fb8c62 SHA-1: d8893193c5f61aa35f6f8e7880d617e28eff4986 SHA-256: 2dd4ba32459c6c7c62269964e6596ce631e124377b71946f67e2e021ac771032
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.link/123?keyword=fiddle+dance+percy+fletcher In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5f9c77555420b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382413/normal_5f9c49996d65f.pdfIn PDF document text
    • https://xigijoxupawise.weebly.com/uploads/1/3/3/9/133999412/8585554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f920bdea1d1e.pdfIn PDF document text
    • https://tivurenufetoza.weebly.com/uploads/1/3/4/2/134235987/25e482648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f8c1d04da294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418197/normal_5f9ce932e632e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385011/normal_5f99312f49e56.pdfIn PDF document text
    • https://wawukonuxoni.weebly.com/uploads/1/3/4/0/134095992/9550118.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/ce8fcb9221c43a1.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/9510dff2-bd3f-49c5-99ce-9af3453335e3/fitafutojegemadupejijus.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6553 5120 bytes
SHA-256: 0e748fa1f6c513bf5d99e68085204828e3424fdc7cee334b74b9271f318965dd
font_01_sfnt_off000076c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 11256 bytes
SHA-256: 7cdfd7c3049f49186aa3b78a2b253bfdac07cb8f161ef53a98f9cd8412abe289
font_02_sfnt_off00009db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB1 16096 bytes
SHA-256: 3a87a2a80cb0740ff7ad33dbd9b35031d90241dfccc5ab96a3d2c3133af9c3ca

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