Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4c343bf71a73a1…

MALICIOUS

PDF

79.5 KB Created: 2021-03-21 22:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 5bb3a45c1db36da3a1aa929541692e84 SHA-1: 23cedd6bcc1da178c821355c2228451146431bf4 SHA-256: ed4c343bf71a73a1cf0f2933c656ad5b61b1ef523537dc77e0fcc936fa4633e7
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, as indicated by the PDF_URI and ML_NYX_PDF_MALICIOUS heuristics. The ClamAV detection further confirms its malicious nature. The document body, though heavily obfuscated, appears to be a lure related to 'Samsung tv control setup with amazon alexa', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/strik?utm_term=samsung+tv+control+setup+with+amazon+alexa PDF link annotation
    • http://arboozfilm.com/mifuxozumotvjcjx.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/what_kind_of_pill_is_amc_875_125.pdfIn PDF document text
    • http://jowesomovuwo.iblogger.org/40254832883.pdfIn PDF document text
    • http://bixaxivajujojar.mypressonline.com/mudabi.pdfIn PDF document text
    • https://lanapovo.weebly.com/uploads/1/3/1/4/131437145/6eef8e768c4d.pdfIn PDF document text
    • http://ketorebagibof.22web.org/waves_and_electromagnetic_spectrum_worksheet_with_answers.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/jasasa.pdfIn PDF document text
    • http://vixegoxufareka.getenjoyment.net/aspirantszone_weekly_current_affairs.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/best_resistance_band_exercises_for_chest.pdfIn PDF document text
    • https://kegadurab.weebly.com/uploads/1/3/4/0/134096735/nesufi.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/elements_of_music_third_edition_answer_keyod63x.pdfIn PDF document text
    • https://figusemaf.weebly.com/uploads/1/3/2/6/132682639/8852141.pdfIn PDF document text
    • http://garant-ritual.online/dumapezr38l.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/70099832445.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/qu_enfermedad_produce_ardor_en_el_estmago.pdfIn PDF document text
    • http://agentsecure.space/xotelajudy5y1g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd23f837-e739-4daa-8ede-60129eebbdca/how_to_prepare_for_cultural_interview.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbb53ec2-327b-4fc9-bf8e-a4ebb7dcd835/31365361693.pdfIn PDF document text
    • http://liduvitulugug.onlinewebshop.net/bronchiolite_2020.pdfIn PDF document text
    • http://tijetefewojo.epizy.com/adjuvant_chemotherapy_breast_cancer_guidelines.pdfIn PDF document text
    • http://nekonopevijaj.rf.gd/how_do_you_say_mandalorian_in_spanish.pdfIn PDF document text
    • http://rinitede.epizy.com/fanawosidapamiwekevuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b55a3358-2c54-4ae6-bc77-9a0adaa92bc0/64240002655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec08690-2dde-49d0-8bf3-ba502ca935d8/word_2016_mac_keyboard_shortcuts.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_off0000f912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF912 5720 bytes
SHA-256: 39320e769735ef1e007cf4f1e8a4c319c4e543dd41c1faf179a58840be1b8466
font_01_sfnt_off00010c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7C 10740 bytes
SHA-256: a6abadf47c9cc7bb2a9bfc54b605cc941301ea2017ce4b7bde43ea1803cf6d30

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