Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5aac0f02389ad4…

MALICIOUS

PDF

692.9 KB Created: 2021-03-18 11:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52df30d222ef3abb88e91dbf2f2d3362 SHA-1: 25cec8a2cb8b27e67de19f9ad9849e7cd9bb1612 SHA-256: 8e5aac0f02389ad499414fa0e1c2cddcbfd53a51c2c4775b6b663d31439c6474
136 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The heuristic 'SE_MFA_LURE' indicates that the document is designed to harvest credentials or abuse multi-factor authentication. The embedded URL points to a suspicious domain, likely serving as a landing page for phishing attempts. No scripts were extracted from this sample, but the presence of an external URI and the MFA lure strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6523

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://zajinet.ru/strik?utm_term=the+heart+of+change+field+guide+ebook
    • http://vejomit.22web.org/momodelodobefemiwojeg.pdf
    • http://jubemexor.22web.org/fowotozela.pdf
    • http://galosidijixiwu.mypressonline.com/19170058862.pdf
    • http://gonalotuturopil.mywebcommunity.org/bagidetevokisutadosunijom.pdf
    • http://lalexejiwisejul.iblogger.org/algebra_2_final_test.pdf
    • http://zakumof.22web.org/kenmore_elite_washer_wont_drain_or_spin.pdf
    • http://sdfsdfsdf.shaketorch.com/breviario_de_podredumbre.pdf
    • http://napodosawukezob.getenjoyment.net/basis_set.pdf
    • http://mevukavotidu.getenjoyment.net/23620781703.pdf
    • http://sutiboju.sportsontheweb.net/fugiz.pdf
    • http://tarekupi.scienceontheweb.net/gexunaruseturuwipat.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ladinuronabo.epizy.com/hp_eprint_wireless_printer_driver.pdf
    • http://fuvarijes.atwebpages.com/nikon_f5_occasion_ebay.pdf
    • http://rawotagetanona.rf.gd/83490545786.pdf
    • https://uploads.strikinglycdn.com/files/09af4697-e40f-4fd1-b4f5-ddc809737118/how_to_sync_airtel_dth_remote_with_sony_bravia.pdf
    • http://vekalaluno.epizy.com/diagnosis_type_2_diabetes_nice_guidelines.pdf
    • http://fuginovotaroni.epizy.com/98551397881.pdf
    • http://bonoxebagaru.epizy.com/antemortem_adalah.pdf
    • https://uploads.strikinglycdn.com/files/6c8b719b-21a7-4933-97d7-d1c33b9f84f9/gluten_free_diet_bad_food_delivery.pdf
    • http://wojobawezelo.rf.gd/integral_calculus_questions_and_answers.pdf
    • http://fawofalolujug.epizy.com/xakimudisoxulabaserugafu.pdf
    • http://fopaguduvogo.rf.gd/borges_the_immortal.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_off000a84c0.bin
9b7d8c2b79ae6037854bfe9f0a2f8807a2d27f6857beadaf3c34a18c9caa4ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA84C0 5260 bytes
font_01_sfnt_off000a96a1.bin
c6927993cf938e3ad7e948cf70d721ba9c34a7bb4c932b571b4a7ed0169fe2fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA96A1 12780 bytes

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