Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd53b0f2bc3624e…

MALICIOUS

PDF

109.0 KB Created: 2021-04-06 01:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 579e324354e36fd4ddb962a256139ad3 SHA-1: 7d2a991cba262f98680808b4a375768c29980d76 SHA-256: 3fd53b0f2bc3624e9a33918e0fdeda6dbf2b7c7413312c2b03dcdf3b2774df0b
104 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'soxebez.ru' and a heuristic indicating an urgency lure suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL indicate it's likely designed to exploit vulnerabilities or trick the user into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://soxebez.ru/strik?utm_term=is+dance+of+dragons+the+last+book PDF link annotation
    • http://lamisorosasam.mywebcommunity.org/english_letter_sounds.pdfIn PDF document text
    • http://fozakewugumomig.22web.org/circled_red_x_in_aircraft_forms.pdfIn PDF document text
    • http://zanodopowe.sportsontheweb.net/32469551713.pdfIn PDF document text
    • http://workbykoder.xyz/the_trove_magic_of_faerunjtn25.pdfIn PDF document text
    • http://pmaider.com/metro_map_delhi_latest_20193cka1.pdfIn PDF document text
    • http://sagunasifug.iblogger.org/trastornos_alimentarios_2020.pdfIn PDF document text
    • http://rodajaxugeno.22web.org/32561726640.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/7854720607.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuzoniwetavo.rf.gd/breath_of_the_wild_linkle_mod.pdfIn PDF document text
    • http://modotiwavuw.epizy.com/57306738854.pdfIn PDF document text
    • http://fabonejane.onlinewebshop.net/apprendre_a_dessiner_en_perspective.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/emulator_android_nox_app.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/how_do_you_do_an_environmental_impact_assessment.pdfIn PDF document text
    • http://zikukoji.epizy.com/baera_job_application_form.pdfIn PDF document text
    • http://lobakixadob.epizy.com/40886581353.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/xawuzuwikavejemozomiwi.pdfIn PDF document text
    • http://fifoxov.rf.gd/traduire_document_anglais_francais_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/gisifuderuneminer.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/fokinexib.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/15956767513.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_off00016fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FA5 5424 bytes
SHA-256: 2bdbffabfbac7bc552b102c1eed0cd380b561544259c23be5da4870efdfad1e6
font_01_sfnt_off00018212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18212 10772 bytes
SHA-256: 166d7286ce47993b3e056e0be4d1adb640a8346cfc6bdea23cbb863f0ac4c096

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