Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8754a0264f7fb5…

MALICIOUS

PDF

89.1 KB Created: 2020-11-05 08:55:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f21c00f3df1b4ebbb08e5e7363088a25 SHA-1: 105dad77fffb0d354b2c8c37070aecf1ed0381e3 SHA-256: ee8754a0264f7fb57f9503d98898c425d02938dd5576ab0d1356dbfc90d608df
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by an ML classifier and contains multiple embedded links. One of these links, 'https://gettraff.ru/aws?keyword=schiller+aesthetic+education+of+man', points to known malicious redirector infrastructure. The document also hosts a large number of external PDF links, suggesting a link farm designed to distribute malicious content or engage in SEO manipulation.

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://gettraff.ru/aws?keyword=schiller+aesthetic+education+of+man In PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/nolobo_magikazodanivig_mobanedafunalo_kiwumodab.pdfIn PDF document text
    • https://vodoxakitukep.weebly.com/uploads/1/3/4/3/134335140/2628844.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/6b486ce5-c942-428a-8cd1-5965a8427e9b/kepukobir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e5c0040-0e9b-4dd1-b811-f4a084d8e9ae/xuzax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ba1b3b-c5e3-4675-98f5-e7fba51c1332/bobcat_743_parts_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdbfdee9-9377-4878-8a38-672419fe03fa/73070840763.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca833681-e981-4802-8e8e-c025f3f0b8e2/change_of_address_florida_driver_license.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be294389-0ee9-4054-b265-a3d043cacc93/kopiwujawomegesuxenikivuz.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/bronsted_lowry_base_vs_acid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c9f0d8-660b-4150-b7f9-e78095f7a6d9/lutuxigujefexolafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac0aaf37-d716-4adc-b9e5-b03975c65b89/chicago_Gzel_Sanatlar_mzayede_evle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf2795e-e4a3-45de-9d73-9403c626bc4c/vivitar_mini_digital_camera_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c4f354f-4740-42ee-abf8-20c126b3b752/gidex.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F30 5364 bytes
SHA-256: 1a9eec07e180438061c7d0722f710176786a84607bbf17140e030a4de593b1bb
font_01_sfnt_off00013143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13143 11832 bytes
SHA-256: 45ee8c721d17b4bc1be0e7c31fc2b209d64fcd06c24c1157c79d80a65d7b5e36

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