Malicious PDF — malware analysis report

Static analysis result for SHA-256 3603d987aa247807…

MALICIOUS

PDF

77.8 KB Created: 2021-04-08 00:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b17226b57d61fabbb6d4a79734f0fa4e SHA-1: 4a376f729d6184d8d5f2f43938774479afa64a6d SHA-256: 3603d987aa247807a49e9c1edcbdd0aaef6644771ec59fb6fef845e5b1d7bd34
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of external URIs and the overall structure point towards an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/strik?utm_term=why+is+hp+envy+4500+offline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379489/normal_606b884c15d6d.pdfIn PDF document text
    • http://revodegasiger.sportsontheweb.net/calendario_2020_venezuela_con_feriados_y_bancarios.pdfIn PDF document text
    • http://mufosubofamar.mywebcommunity.org/historical_dictionary_of_ancient_greek_philosophy.pdfIn PDF document text
    • http://roskycnmx.com/86895124257qo02l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373504/normal_6031fcc71abbb.pdfIn PDF document text
    • https://bivitomelonex.weebly.com/uploads/1/3/4/4/134491730/fa7146723.pdfIn PDF document text
    • http://mebelrostov.ru/subjective_objective_and_possessive_pronouns_worksheet_with_answerswucnl.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/jbAjagc/21358661488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371786/normal_5ff658b69a557.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389084/normal_6022bd5d270db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497078/normal_6021f68c2e3a8.pdfIn PDF document text
    • https://cdn.sqhk.co/mimizajig/a8Bifgg/mustang_gt500_super_snake_0-_60.pdfIn PDF document text
    • http://lisuzigerob.mygamesonline.org/catholic_bible_concordance.pdfIn PDF document text
    • http://funseeds.site/symantec_cleanwipe_utility29hng.pdfIn PDF document text
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/290822.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366630/normal_5fdfb7d808dfb.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/gjgfXhf/best_tags_for_youtube_makeup_videos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379610/normal_604ab485b1d79.pdfIn PDF document text
    • https://rozujefugupag.weebly.com/uploads/1/3/4/0/134017035/lowowilipeg_zasun_sajekijax.pdfIn PDF document text
    • https://cdn.sqhk.co/voxoduvi/OhfPiiL/hungry_shark_evolution_hack_game_download.pdfIn PDF document text
    • https://bibomezu.weebly.com/uploads/1/3/2/7/132710601/pakibalifanetugune.pdfIn PDF document text
    • https://safubijob.weebly.com/uploads/1/3/2/6/132682970/28acf5d99d6.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/2004_honda_civic_maintenance_required_light.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D6 5212 bytes
SHA-256: eccadefddb134d57ca185e570ff3962dcaf4fd2c9cadb5e774057c75d6ff8ad9
font_01_sfnt_off000103c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C4 11028 bytes
SHA-256: 60b82d5c988bd45f784bac6332d5f7c6b39b8d069f3800916241add03bebf84b

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