Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f55244c84cf7c1…

MALICIOUS

PDF

81.4 KB Created: 2021-05-10 14:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3b7a44c0fa4b0621bcbabbaaf312a80c SHA-1: 9f68da4242464dfa0957ca8fe1434f399d30548c SHA-256: 04f55244c84cf7c111a23ef8658758cd37cf5f06afeb3379724a0622533f5dd0
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 0.9995

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
  • 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://maypoin.ru/strik?utm_term=fisher+paykel+dishwasher+parts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452852/normal_6042055147674.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/icom_ic_2100_service_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486982/normal_6018dbb37b4c0.pdfIn PDF document text
    • http://xixofafil.medianewsonline.com/xevawanapeniveles.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/how_to_facebook_recovery.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376099/normal_60340addd24ff.pdfIn PDF document text
    • http://kujinatazema.sportsontheweb.net/workbook._save_as_c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_5ff174df7a96f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380705/normal_606d242c657e3.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/what_if_3_day_potty_training_doesnt_work.pdfIn PDF document text
    • http://getepitisux.mywebcommunity.org/how_to_make_ac_to_dc_converter.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/30bab7c6-dfcd-4cdf-ad1e-f544ed623339/im_westen_nichts_neues_online.pdfIn PDF document text
    • https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_d26ea6fd967a4014b8b3934d5e4e2660.pdf?index=trueIn PDF document text
    • http://nibizuladode.onlinewebshop.net/lyrics_bts__love_yourself__her_serendipity_come.pdfIn PDF document text
    • http://bekusisit.atwebpages.com/whirlpool_gas_range_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce2a3c5e-b379-49d1-b228-2ba26368ff2d/how_do_you_reset_a_kenmore_wall_oven.pdfIn PDF document text
    • http://fawikinego.myartsonline.com/42608331111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce2348c-2d43-47b7-befb-9f5e83d0b187/fe_reference_handbook_10.0.pdfIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_8209efaf1d8747c8b8d40adde0e1eea0.pdf?index=trueIn PDF document text
    • http://nedizilunok.myartsonline.com/86230367121.pdfIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/simple_present_progressive_tense_worksheets.pdfIn PDF document text
    • https://8a6b9437-e7f2-49d7-8c24-351b272aa67a.filesusr.com/ugd/b18e4d_080eaf1a39ca45bba455d2b65efde5f2.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF078 3828 bytes
SHA-256: f64add9e0a0575c8f910074acedbb6142533a377b64aadc0734d2ce3acdf158f
font_01_sfnt_off0000fe35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE35 5260 bytes
SHA-256: aecba4bdaf71b3a7afe2117a24152a76ac21ab220066fe700a23c56a38ba8971
font_02_sfnt_off00011026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11026 11008 bytes
SHA-256: f58a571d752469f1c5f0de8545b92549b4113f210b896ad63e7a5a9b8526a7e2

Open this report in the interactive analyzer, or submit your own file for analysis.