Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47344233ae91c1c…

MALICIOUS

PDF

81.5 KB Created: 2021-04-03 15:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 070ef69ffffb7b586cdb6e5e2b52a24f SHA-1: b580982ccd784a70d4b65d3035ff77941d1c0ba6 SHA-256: d47344233ae91c1ca5abacd753c5f0deefb7cca769f9033303c298637470df0d
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://lozipotod.ru/award?keyword=spondylitis+exercises+pdf PDF link annotation
    • http://mufinofol.scienceontheweb.net/ain_t_no_sunshine_chords.pdfIn PDF document text
    • http://selavaxanunuv.iblogger.org/best_android_games_to_play_with_friends.pdfIn PDF document text
    • http://dipunag.getenjoyment.net/what_are_the_classification_of_organic_chemistry.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwovodegi/ghia58i/word_collect_answers_level_2005.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/rajuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kevapaboxer/xjjjcjb/5860630560.pdfIn PDF document text
    • http://banujal.iblogger.org/les_buddenbrook_thomas_mann.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447280/normal_5ff3e51482562.pdfIn PDF document text
    • https://cdn.sqhk.co/ramowejub/ibiejjq/best_photo_collage_app_ios_free.pdfIn PDF document text
    • http://tigadugutuvatix.mygamesonline.org/bangla_golper_boi_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5fe726ff1aa89.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/iggseme/18701404198.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bakutogigu.rf.gd/43817030791.pdfIn PDF document text
    • http://fanulegosupilul.rf.gd/lejiwazojitadoponilebel.pdfIn PDF document text
    • http://bamafeze.rf.gd/42740926932.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/zibutirovabonul.pdfIn PDF document text
    • http://fiforeru.atwebpages.com/87714468566.pdfIn PDF document text
    • http://wanudoxemix.epizy.com/eureka_easy_clean_stick_vacuum_images.pdfIn PDF document text
    • http://famujuzoparelax.epizy.com/twilight_zone_2019_full_episodes_free_online.pdfIn PDF document text
    • http://lotawovuvowuk.rf.gd/17476840866.pdfIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/5252615189.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF423 5000 bytes
SHA-256: 30344856d95bbc832eace8840b59aaca94606abf3ac9bc131b2b819062a2cf0a
font_01_sfnt_off00010539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10539 11136 bytes
SHA-256: d960c91389c85a8d53b4298acc8d89af9f579b3e99e1b83b7127f3b9363589f4
font_02_sfnt_off00012ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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