Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a3514f1b093e121…

MALICIOUS

PDF

73.4 KB Created: 2020-12-19 13:13:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c26b23f6cc25fc9de714f15e000b8e6d SHA-1: 7a487ce8c872a26fd031de1019fe1ef7ff316ce3 SHA-256: 4a3514f1b093e1215cb88889f4105510b0dc7853a515dd449b4330dcc9e4329f
104 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. It uses an invoice-themed lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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?utm_term=cheat+sheet+for+review+of+systems PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4d2b90a2757459bfc0ed4/t/5fd065561c49363a9b49e259/1607492956076/40832794096.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/moger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d55ff967-3268-4319-8aae-614bf6c94173/lexuxarimefiraz.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/fojazarumotesixeguk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/819cb78c-b969-4851-a08a-6569434b6752/89640911534.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbc7c6d964583621a279/t/5fc1727d3c6ccf69f394baf5/1606513278504/north_gwinnett_mens_lacrosse.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/videos_for_cats_birds_and_mice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/743ecb73-012d-4592-8d60-bdf336561ab0/15324586463.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/cisco_bgp_configuration_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7fc4f3-e659-4277-b6fc-1cc700b70fa2/biwenugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b11122ce-5f7b-498f-b057-2a048b4b5ae8/70769094455.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc529ae92c50b1a1e933082/t/5fd6c5db72b1137fa9851dcc/1607910876413/69327653759.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 1

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_off0000e3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A9 5136 bytes
SHA-256: a47782f8fb1a22b901c143538e1d459f38eb4675c90740a5cd9f61bc46295818
font_01_sfnt_off0000f50e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50E 10424 bytes
SHA-256: 03ec9b145a43efa5d2a123bb3270d650b01c6c78876bba762b6a8c66ab979ff5

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