Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e44fe35f95e665…

MALICIOUS

PDF

71.4 KB Created: 2021-03-13 15:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dd2e3cd5baa1298b313d2ea0cd8656f5 SHA-1: 2b5e47397d4ea4b66be8f72b6c1b0113369fc0dd SHA-256: f3e44fe35f95e665f9197f7f49906fae2cad969fd83db663d3992f1ea7287831
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 0.9998

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/wix?keyword=google+map+gamestop PDF link annotation
    • https://cdn.sqhk.co/pufowuvikij/jjhbzjh/calendar_2020_printable_free_one_page.pdfIn PDF document text
    • https://cdn.sqhk.co/fokolamezo/wSfR4jf/intercooler_turbo_price_in_sri_lanka.pdfIn PDF document text
    • http://molufipet.sportsontheweb.net/ssh_command_in_linux_with_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/nivodoruw/WGvhegh/dwts_2020_cast_pros.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/xhdbfhg/any_good_american_football_games_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/gfkJqhe/asteroid_defense_classic_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/ihifFE1/57352449646.pdfIn PDF document text
    • http://tadurarawi.mypressonline.com/wurilaratinadowukefawibem.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/powerflex_700_manual_espaol.pdfIn PDF document text
    • http://aycotoro6.xyz/food_photography_books_for_beginnersijk9f.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/maytag_washer_code_e01_f09.pdfIn PDF document text
    • http://goldstein.capital/6556057972004a7k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ketabigumowun.atwebpages.com/giguwexuzorobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60352ded-f613-4e50-9df4-13ab1956f04f/2003_dt466e_valve_adjustment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75e5e6f7-fd42-4eb9-9209-547183ba90b1/cashflow_101_game_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a5f077-2cde-4845-adfd-5983e0c37eab/wordpress_default_login_username_password.pdfIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/69491516986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d637519-90cb-4c3b-bf23-e5a85d9d0e47/revimesobidil.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_off0000d6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A3 5076 bytes
SHA-256: d708cc8c65027aca19ba2845c6ba6c7220216b94150011ecaa52714741ac27b7
font_01_sfnt_off0000e7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D8 12608 bytes
SHA-256: f8f6ae1c94edc032ccc3bea480ed48c623720edbd0b53dbf78124f9cef4962a9

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