Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6b9f79d258b4ae…

MALICIOUS

PDF

99.1 KB Created: 2021-04-14 16:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ec5401f6b14bc9b8f7f27cc6e91d8102 SHA-1: c0d6ec6d9f5f97edbdae61c9eca47f145fddce84 SHA-256: 7e6b9f79d258b4ae6ff1208d0ef01c593b1830f9958648e414cfcf19d3d75ecb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though garbled, contains a search query suggesting a lure to trick users into clicking these links.

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://leonvi.ru/strik?utm_term=which+smartwatch+is+best+in+india+under+3000 PDF link annotation
    • http://mivetys.xyz/808735480792oohu.pdfIn PDF document text
    • http://1gusevshop.space/all_ticket_to_ride_games_rankeda1fut.pdfIn PDF document text
    • http://good-production16.site/krups_beertender_b100_reviewttmvz.pdfIn PDF document text
    • http://remebetegekit.iblogger.org/generaciones_x_y_z_baby_boomers_millennials.pdfIn PDF document text
    • http://saveyoutubebot.com/the_land_of_stories_book_2_pagesptzhx.pdfIn PDF document text
    • http://vutanojevi.iblogger.org/customer_journey_ppt_template_free.pdfIn PDF document text
    • http://moxolesapudeli.22web.org/60941848637.pdfIn PDF document text
    • http://sport-stavki.fun/fichas_de_trabajo_en_word1yflx.pdfIn PDF document text
    • http://bijeledi.iblogger.org/25260141585.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/4ed6c951-66b7-48a0-b655-8712af45fad4/16468006860.pdfIn PDF document text
    • http://jozixal.epizy.com/manual_tea_bag_filling_machine.pdfIn PDF document text
    • http://musovulazapa.epizy.com/avery_label_template_8160_for_pages.pdfIn PDF document text
    • http://wavusuwu.epizy.com/98323347757.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/semantic_feature_analysis_worksheet.pdfIn PDF document text
    • http://zububewe.rf.gd/adobe_photoshop_cs6_advanced_tutorials.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/logic_pro_x_10.3.2_system_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/brinkmann_smoke_n_grill_electric_parts.pdfIn PDF document text
    • http://lapodalojowev.rf.gd/recette_aperitif_dinatoire_thermomix.pdfIn PDF document text
    • http://libafal.epizy.com/83616108031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e99f19-2b9b-4c62-9294-f7b573fd8ceb/motorola_xts_2500_battery_eliminator.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/30928328056.pdfIn PDF document text
    • http://wavanak.epizy.com/bad_blood_book_reddit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13006 5696 bytes
SHA-256: e3a66135972f2aa1dfe22b37c4e4fe6ec49eaa3fb0740607c3ee142170d2cbae
font_01_sfnt_off00014351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14351 11040 bytes
SHA-256: d22d9461044866be5d99740326486bd76581b067c963a0eabda2f4c7adf1192e
font_02_sfnt_off0001694d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1694D 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8

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