Malicious PDF — malware analysis report

Static analysis result for SHA-256 b383442e85269cbb…

MALICIOUS

PDF

56.3 KB Created: 2020-11-03 20:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1add546abcbabc70944b4885bfc8837a SHA-1: 92ed49a71777979f8e7e05a83286a960f2a37054 SHA-256: b383442e85269cbbc55a2fc85bcc6a3968699ff962a343da64c8804c321162ca
94 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 an ML classifier. The file 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 3

  • 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.
  • 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=papa+louie+when+burgers+attack+game In PDF document text
    • https://finivoxub.weebly.com/uploads/1/3/4/3/134387593/liwodepejovarap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5f8a596f0fd47.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/zivumepajupej-pujulorizarap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gupuso/mitutasoxozuvadepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a778628-dc82-487d-be9c-c7ae201a8dce/pexotana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a194f50-2aa1-4cd4-a73f-d9beee8cfac0/bijoriwimigewe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d56328e2-5f3e-4f87-b1c0-2f0c0e292314/4113147246.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/64714196261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e560ed-0a98-4fb9-a106-3b4160920fda/20876695602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4f0b3c-0caf-4885-90f7-1ea2902ee58b/18130063637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06cba5b3-770e-419c-be2d-235609123c29/s8630_fujifilm_camera_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/minds.com_mr_bond.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/capacity_development.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/career_paths_environmental_science_express_publishing.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D17 5644 bytes
SHA-256: 75bdc41beb0dd1517c7ec463a0ac1d843c19c58f93c4405e518c7fc9701985e0
font_01_sfnt_off00009034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9034 11340 bytes
SHA-256: 1855851d9e5c5b8f646647780f845cfcd4dd6841526f6b648311688f169465be
font_02_sfnt_off0000b717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB717 18196 bytes
SHA-256: 68ee6ae339da85f3843c108fc83292b07d03093ef8090ad61f185dcaa90b8b4e

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