Malicious PDF — malware analysis report

Static analysis result for SHA-256 be24a054eff3dad4…

MALICIOUS

PDF

80.1 KB Created: 2021-04-15 14:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03e85fffd0ea92be7ccffa4accd52444 SHA-1: 7caf3e5be55c951bb736ca5fb8f1c3b8dd5f6770 SHA-256: be24a054eff3dad47a0aacc1cfc4a2b5aaa628ccd1e7347d0d320253269d88b8
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was flagged by a machine learning classifier and ClamAV as malicious. It presents a fake CAPTCHA to the user, a common social engineering tactic to trick users into performing an action. The embedded URL `https://ponafet.ru/strik?utm_term=ejemplos+de+dialogos+en+espa%25C3%25B1ol+entre+dos+personas` suggests a phishing or malicious content delivery attempt. No scripts were extracted, limiting the analysis of specific execution chains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://ponafet.ru/strik?utm_term=ejemplos+de+dialogos+en+espa%25C3%25B1ol+entre+dos+personas
    • http://instacopyrighthelpteam.com/which_type_of_wiring_is_used_in_homesl5l9z.pdf
    • http://stal-kemerovo.ru/snappers_key_largo_reviews5j9df.pdf
    • https://wuvumivew.weebly.com/uploads/1/3/1/4/131410662/kuwuvelagijikolesawa.pdf
    • https://zunarorukozem.weebly.com/uploads/1/3/4/0/134016655/pukegekupuxolaka.pdf
    • https://malugeko.weebly.com/uploads/1/3/1/6/131636988/xitimizoniden.pdf
    • http://padlamadla.site/boy_in_the_striped_pajamas_movie_storye6j6x.pdf
    • http://moitender.org/adventureland_tickets_veridian31m20.pdf
    • http://hdvideo.design/masazuxavpkpx1.pdf
    • http://teguruta.medianewsonline.com/ncert_11_biology_textbook_download.pdf
    • http://nakekizedexu.getenjoyment.net/zofafagudonoluzepilopibu.pdf
    • https://gasovopur.weebly.com/uploads/1/3/1/4/131453365/vopenitokixin-valizunok.pdf
    • http://cardioactiveuficiale.site/math_worksheets_factoring_trinomialsh9ld1.pdf
    • http://feedbacrnz.space/5269125553rc99u.pdf
    • http://baffer-shop.space/balochistan_issue_and_its_solutionxjpk6.pdf
    • https://lafimidoxugimu.weebly.com/uploads/1/3/4/5/134505664/sagupopasewa.pdf
    • http://ramedefinu.getenjoyment.net/82543178860.pdf
    • http://lnstagramcopyrightservices.org/chiller_trane_koolman_500_manual_espaolt4w1n.pdf
    • http://rujisuki.mygamesonline.org/elgato_game_capture_card_hd60_s_switch.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wuzalugiseto/motovoloje.pdf
    • https://s3.amazonaws.com/vufupu/koxuzuxutazelijefinigino.pdf
    • https://s3.amazonaws.com/guxosa/16543724826.pdf
    • https://s3.amazonaws.com/rodakarugupoko/mufixib.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f724.bin
4c4844a013aef6e2fb371a8b2a6f488f4022b07746cc0931f8d4f8d637128ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF724 5524 bytes
font_01_sfnt_off00010998.bin
275cd57761924b808fd2bce4346be2c1de400b53bfb51985002a3165940d6782		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10998 12008 bytes

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