Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72e9aeaa7001ffe…

MALICIOUS

PDF

74.7 KB Created: 2021-03-07 07:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6c0749f665390f86dc59b603681226fd SHA-1: bca8eb135916806e9fc627795181d66596dc8da5 SHA-256: b72e9aeaa7001ffea18d1eb1eee50687e3d2b3472d80619d03b99bb75bb5d7c2
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-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://kuzutuzo.ru/strik?utm_term=what+is+the+original+5+love+languages+book PDF link annotation
    • http://idealslimitaly-ufficiale.site/1996399105910j0p.pdfIn PDF document text
    • http://allfreebets.ru/mojevixadumubewigefuvize3aa1w.pdfIn PDF document text
    • http://yourdesk.website/boiler_water_treatment_processgb0mo.pdfIn PDF document text
    • http://choosemadam.site/base_transceiver_station_antennab2ko3.pdfIn PDF document text
    • http://jumpfs.space/metagokemakajewoxokupkira.pdfIn PDF document text
    • http://cozyplacefor.rest/softonic_avg_gratiso6ths.pdfIn PDF document text
    • http://lightstart.xyz/fenovexitevezemevioyivq.pdfIn PDF document text
    • http://info-pages.ru/baidu_antivirus_for_windows_10_free7himp.pdfIn PDF document text
    • http://hiziryigit.online/new_delhi_railway_station_platform_number_3fgo3l.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/regoruwomawabala.pdfIn PDF document text
    • http://meetraisins.club/19422984870p1xca.pdfIn PDF document text
    • http://purpless.vip/libro_derecho_romano_eugene_petitpifn3.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/insinkerator_badger_5_reset_switch.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rojanesifilagu.myartsonline.com/bowiwago.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/burger_king_breakfast_menu_low_calorie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda96800-51ca-4caa-b5fd-c4402a8a3609/what_to_eat_after_a_10_day_cleanse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7acaab2d-6bb8-4ab2-b8b5-074618479f9a/do_androids_dream_of_electric_sheep_chapter_2_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b03acf-3b6e-4218-9877-0b50f899c314/review_delonghi_ec702_15-bar-pump_espresso_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cce34f9-a823-4650-b9f6-e4488360d376/fuzedotekowilev.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/how_many_forms_are_there_in_wing_chun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b6551a3-b614-4696-964c-dc493b196d20/venizavuzowenisekov.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_off0000e2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E6 5348 bytes
SHA-256: 8dc4a1fd5bc3fb900c1b9fbb415d7bb493cda37600fc1334335fbca6b45c89af
font_01_sfnt_off0000f529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF529 11924 bytes
SHA-256: 66f8a6330cbd9fbe22d89b8f7990b01ba9bc52237ccc20b7a68a507f597396ba

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