Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c8518ca7fe7185…

MALICIOUS

PDF

100.1 KB Created: 2021-03-04 21:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: c7dcec0f560b88924251e96686da16ef SHA-1: e1116f94adf711e2ce0d20ac0b3a1426c62437cb SHA-256: 19c8518ca7fe7185051937b3092930d066592d15889a544fb4ed6a9797f322d7
104 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, and the document body exhibits signs of urgency, suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the heuristics indicate a likely attempt to redirect the user to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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
  • 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://resalured.ru/wix?keyword=what+i+know+for+sure+pdf+ebook PDF link annotation
    • http://raxejudesezix.scienceontheweb.net/how_to_help_healing_after_c_section.pdfIn PDF document text
    • http://bestsaleshopin.xyz/can_you_connect_jbl_bluetooth_speaker_to_tvu90gy.pdfIn PDF document text
    • http://vikiduxa.mywebcommunity.org/netgear_wifi_extender_wn1000rp_setup.pdfIn PDF document text
    • http://icub.tech/national_safety_science_quiz_sample_questionshc7ry.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/best_sat_prep_books_2020_reddit8rucg.pdfIn PDF document text
    • http://fajasated.mywebcommunity.org/how_to_find_wps_pin_on_brother_printer_hl-l2370dw.pdfIn PDF document text
    • http://superheatbelt.xyz/904282864578eohm.pdfIn PDF document text
    • http://fb-copyright-help-from.com/bijimunedamogelj48s.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/la_clavicula_de_salomon_resumen.pdfIn PDF document text
    • http://peskomment.ru/math_100_chart_blankvkd4c.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/64564370490.pdfIn PDF document text
    • http://blognews.top/what_is_the_best_stock_trading_strategyv2a96.pdfIn PDF document text
    • http://bigchance.pw/78696476660ir5y3.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/falevi/apache_maven_3._5._4_for_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/the_last_of_us_remastered_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/94829511719.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/bezad.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/35319227641.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/break_up_images_with_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/sleep_apnea_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/application_writing_format_for_school_in_odia.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/wejuviwibavawu.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/80817863903.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/24003851043.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/mebubirifevoz.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/sterilization_of_culture_media.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_off00014b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B98 5408 bytes
SHA-256: 415a699cfbd9a5d146ebe95bf977746500a5fc717bfba09ec6d2f4bece72e1f8
font_01_sfnt_off00015e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E0D 10792 bytes
SHA-256: b4158a5b54ebfa60d40d6190a443567205214e2d565fa682d0a65424659f2215

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