Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0db020a45253df…

MALICIOUS

PDF

81.9 KB Created: 2021-03-24 01:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b48894867aeaab123a2b97408f8a09b7 SHA-1: 553c0bd25366104ca26906c30593d64bb400196e SHA-256: 1e0db020a45253dfccedae7d65e5c520a4409ee97bb63be0d6b1a8ec886dcdf8
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 0.9997

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://botokaw.ru/award?keyword=sociopata+caracteristicas+pdf PDF link annotation
    • http://jovasetiveduza.scienceontheweb.net/27352507846.pdfIn PDF document text
    • http://zofunubesosena.mypressonline.com/border_design_for_a4_size_paper.pdfIn PDF document text
    • http://xatovapotogu.mywebcommunity.org/84448674598.pdfIn PDF document text
    • http://desawigoxikugaw.mywebcommunity.org/acca_f9_bpp_study_text_2020.pdfIn PDF document text
    • http://nanupigib.22web.org/69349851537.pdfIn PDF document text
    • http://ruroraratotu.66ghz.com/sibukod.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/219302922.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/lixuduwonifa/jofikurivuvokapoveladuf.pdfIn PDF document text
    • http://wepezip.epizy.com/74981051744.pdfIn PDF document text
    • http://tofilijewok.atwebpages.com/81962449492.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/naruto_shippuden_volume_170_summary.pdfIn PDF document text
    • http://kaxafedi.epizy.com/lolipotodatozuteretu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e85187c-d8bd-4d66-88a4-ecbc12a0ef26/brene_brown_shame_and_vulnerability.pdfIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/88891512348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bdaf505-d650-4d97-bd7f-ce1cf008c670/bosch_800_series_dishwasher_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08a5eada-5e43-4c99-a8fb-b7697011179e/twilight_movie_collection_free_download_in_hindi.pdfIn PDF document text
    • http://zujisofivo.onlinewebshop.net/hydrolysis_of_esters_and_amides.pdfIn PDF document text
    • http://fewuzefar.rf.gd/41904396232.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/android_tv_box_store.pdfIn PDF document text
    • http://jalebuvubo.myartsonline.com/40575206610.pdfIn PDF document text
    • http://xavitubipuru.rf.gd/how_do_i_prepare_for_navy_seal_training.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_off00010051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10051 5220 bytes
SHA-256: cd2e9c968d6cc30fb5d8ed5017b456f82676fe59531c7b0c095b395c9b47208a
font_01_sfnt_off00011223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11223 11824 bytes
SHA-256: 90678d3a9bc4df5876754355b7f6222dfbdf433a496dcbaf0291d2efe6c167ed

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