Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe544ceb1af1fb6…

MALICIOUS

PDF

65.8 KB Created: 2021-02-19 00:18:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d157590b95ac6e67ce586bb0a42d4e2a SHA-1: 75a228d8145ccd49905d18e99f39aae4e3c73ed8 SHA-256: efe544ceb1af1fb6efae1f10071c8e8a5f93c9cce41246e5a7364c635d8e3bdf
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://seumenha.ru/wix?keyword=multicode+1099-50+manual PDF link annotation
    • http://all-casino.xyz/whirlpool_duet_dryer_repair_manualtzxf0.pdfIn PDF document text
    • https://zejosawazir.weebly.com/uploads/1/3/1/8/131856185/tinoxeteni.pdfIn PDF document text
    • https://tifixexeruwa.weebly.com/uploads/1/3/2/6/132682204/a1976730e90020e.pdfIn PDF document text
    • https://cdn.sqhk.co/gojapawareke/FSbhbhj/xategavorilodepujanilogul.pdfIn PDF document text
    • http://reassurez-moi-fr.info/english_crossword_puzzle_app_answersysqvf.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/jQkicuJ/37997465702.pdfIn PDF document text
    • https://pareruli.weebly.com/uploads/1/3/4/8/134891857/purodibiroxi.pdfIn PDF document text
    • http://edapog.online/investor_carrot_website_templates2375x.pdfIn PDF document text
    • https://cdn.sqhk.co/xidujefonari/XjgHBhc/live_streaming_local_news_free.pdfIn PDF document text
    • https://cdn.sqhk.co/muvuxaji/blGeiiv/health_fitness_tracker_with_calorie_counter_apk.pdfIn PDF document text
    • https://dapoxegimore.weebly.com/uploads/1/3/0/9/130969679/7328693.pdfIn PDF document text
    • http://premial.su/business_environment_analysisr2wdp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gewisetug/13105691913.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/happymod_2._4_0.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/25826321911.pdfIn PDF document text
    • http://xegebasitez.rf.gd/lubawisu.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/zukinanekimedamomuwi.pdfIn PDF document text
    • http://bewukikakew.epizy.com/beyond_compare_tool_for_windows.pdfIn PDF document text
    • http://xatosizukav.epizy.com/cyberflix_apk_for_android_box.pdfIn PDF document text
    • http://zimozovo.epizy.com/nejedokuvugabaz.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_off0000c4ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FF 5324 bytes
SHA-256: 3ba120fc8ff964bf2c4519622ccf6a7da869e919d4c6bc1e5991f258ab251eea
font_01_sfnt_off0000d722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD722 10312 bytes
SHA-256: 521b6c0e84c4ea11e3e2fc0673d6855b71fa4cf863328e16a683c44a9c429123

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