Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed47b6cd7384bac…

MALICIOUS

PDF

71.1 KB Created: 2021-03-04 15:19:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6d662865e06ce73aef435143e36bdcf6 SHA-1: 96824beb5500a5272e30a75002c3aaaf16fc4f9a SHA-256: 1ed47b6cd7384bac8be842724582bfd3f627a9f93ed74083fb9c8a458fa71055
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-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://jumiwimov.ru/123?utm_term=bostitch+n12+roofing+nailer+parts+diagram PDF link annotation
    • http://mattelipsticks.site/bamafusanunpud8.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/ponexabefuvev.pdfIn PDF document text
    • https://gafonubizaragu.weebly.com/uploads/1/3/5/3/135346264/7477445.pdfIn PDF document text
    • https://tavefagizukog.weebly.com/uploads/1/3/0/7/130775361/5746562.pdfIn PDF document text
    • https://dojilosadokadog.weebly.com/uploads/1/3/4/8/134890500/tudedebij.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/2367835733.pdfIn PDF document text
    • http://zibepifutidi.sportsontheweb.net/thermo_king_stock_price_today.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/vexon.pdfIn PDF document text
    • http://mifvideo.space/how_many_digits_is_a_fedex_tracking_numbernpt4n.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/dorulusof/jaundice_in_newborn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a95a4f4-f860-4e49-a7df-2288fa23aa46/why_my_tablet_is_so_slow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307cda5b-f42a-4973-9eff-d31dcdaf8aa2/76135168796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/080a661e-ca58-44fa-8191-76c297ef8820/theseus_and_the_minotaur_art.pdfIn PDF document text
    • http://xakagigoneliv.myartsonline.com/9696088290.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/seadoo_service_manual_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca7b1e5-30dc-4730-9f51-bae7b4e84b3d/nazoliwaferasuvidekomabuw.pdfIn PDF document text
    • http://vakogez.myartsonline.com/how_to_calculate_transformer.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/bare_infinitive_exercises.pdfIn PDF document text
    • http://segimoto.myartsonline.com/is_mechanical_engineering_a_science_degree.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/65283579868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/311eefcc-f32a-4ec4-becc-badabf56dac9/magnetic_field_formula_alternating_current.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/photo_editor_collage_maker_apk.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_off0000d936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD936 5800 bytes
SHA-256: c55b5a372b32b38a67a8de66d3e5e32c5135ba61c750e715e073708894367d6d
font_01_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 10016 bytes
SHA-256: 652d6b4c39af5cc9e66222099517a10d56ba2bacd81abe90665bc4bdcc455132

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