Malicious PDF — malware analysis report

Static analysis result for SHA-256 96974207b4466c64…

MALICIOUS

PDF

63.1 KB Created: 2020-11-21 15:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3aebf059ae5d40d3a95cdf6819cf73de SHA-1: dc131d7bb9dce39299dc7f079dc6b39b31b96b51 SHA-256: 96974207b4466c64f86bd774763076b50867ba510bc01cb370cd86bf46b7ed14
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/123?utm_term=you+are+here+thich+nhat+hanh+pdf+download PDF link annotation
    • https://mavegisokelu.weebly.com/uploads/1/3/4/1/134131346/7249093.pdfIn PDF document text
    • https://juvudunepuzuvo.weebly.com/uploads/1/3/4/5/134513453/votapuwufewaw_lageb_betugukunax.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/7147e.pdfIn PDF document text
    • https://zulujiporanaru.weebly.com/uploads/1/3/4/5/134590758/lelojagosumu.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/kezuzep.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/9540476d-3b5f-4c11-9fe1-7819f63fdbe2/11514150516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4881a8a-994e-41cf-ac35-db1fe987160d/dumatovagunufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be10ae1-9fae-4f46-aedb-982bbf71ab1d/zakaxidudovajigesoras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/896db5fb-541f-4e8f-b37b-53b730ed36a9/20176016262.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40f9d5c9-9626-487e-9476-0eae7a47b927/pofijowagelumeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30c30b78-3ef3-406e-94cc-a0a46eea8bec/58120880375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e4095f4-a805-44f4-8e24-9bdb232542b0/polepadixirogijowono.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 8

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_off0000b88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB88D 5116 bytes
SHA-256: 9834fdbced8299ce11f22eadb3effd0b165f637b8736fe6e16ccbd0631bee59e
font_01_sfnt_off0000ca08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA08 11024 bytes
SHA-256: f2d49cb76b1b1d55250a891a3f05da278497adb2a0c77836e59f883c952370b6

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