Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0317e14b17a5efe…

MALICIOUS

PDF

75.8 KB Created: 2021-03-23 19:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: acb8f3a43e1213843a64fdd6412c2cde SHA-1: 9dca4170d35af7e7be74f8de500180439957308c SHA-256: f0317e14b17a5efe85c369c9f53381864dd3e20aa4010ec83e0e9a4935646ad5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/123?utm_term=paradise+bazzi+song PDF link annotation
    • http://ru-dev.xyz/mr_guns_n_gear_facebookesu0g.pdfIn PDF document text
    • http://tryici.xyz/wilton_tips_for_leaves7h2fi.pdfIn PDF document text
    • http://vikiduxa.mywebcommunity.org/lofomavivateduweli.pdfIn PDF document text
    • http://tertov.xyz/change_battery_timex_heart_rate_monitor_watchpktu5.pdfIn PDF document text
    • http://nuverlites.online/solutions_manual_for_a_first_course_in_database_systems_3_eb5wg4.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/dogevazapiwediw/plumbs_veterinary_drug_handbook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72d30eed-8480-4847-8465-d1b941a94ec7/63429069665.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba733b0f-8c87-4a32-bef8-a201a3c37d43/99004427976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c6aab8-682e-4929-a3e3-51747d967db0/43120419455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2858fb34-cefc-4078-9083-71c1e43028d9/73315383511.pdfIn PDF document text
    • http://muxofitum.rf.gd/simultaneous_equations_substitution_worksheet_tes.pdfIn PDF document text
    • http://naranosufok.atwebpages.com/jubebuvofuwezagitefipudin.pdfIn PDF document text
    • http://vesuduw.epizy.com/beimaan_piya_dj_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7177e406-a731-44f5-b2c4-431fc030f913/dinuxa.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/tabla_de_conversion_de_centimetros_a_pies_y_pulgadas.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/49991673145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c58206f8-08a0-4bce-acd8-6f9e45a5f4c5/hoover_floormate_deluxe_hard_floor_cleaner_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/671a1214-af09-4cf2-a4cd-b4dd9f7d351f/zagizomeme.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/performance_evaluation_template_for_nurses.pdfIn PDF document text
    • http://gafijid.atwebpages.com/identification_of_cations_and_anions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b38c0c55-3df1-4117-9717-adb5d51d27e5/sap_document_type_list_table.pdfIn PDF document text
    • http://fagufobukabovu.epizy.com/21330051568.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_off0000e9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D8 5152 bytes
SHA-256: 55a5374677e96ca248582c53a6880f35e9e8e5f47623dae35ab61dd882c43eae
font_01_sfnt_off0000fb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB70 12660 bytes
SHA-256: 562b51f2d1e4ac68de2ca47126d6f30f103f36fe2ed916d91cc0905a685280a5

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