Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8775aaf9c28495…

MALICIOUS

PDF

86.8 KB Created: 2021-03-12 05:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: bdf866430eda8fdba56d96598cf04460 SHA-1: b9bd4d51a204e6f8274dd625f3a55b03d71e8c5c SHA-256: 8b8775aaf9c28495516e7e99e01f64a0240f15c20d9a29023e332111608d45e4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file. While no scripts were explicitly extracted, the presence of an external URI suggests the document is designed to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=reglas+del+salon+de+clases+primaria PDF link annotation
    • http://nobirejajatit.iblogger.org/amir_arab_song_video.pdfIn PDF document text
    • https://cdn.sqhk.co/letowajaf/cjjjeDR/33947027779.pdfIn PDF document text
    • https://cdn.sqhk.co/besudamuge/ibVR7jf/28039504007.pdfIn PDF document text
    • https://cdn.sqhk.co/jipodipotaj/jdHgfRS/idle_archer_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/uhaRaeN/autocad_application_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/lawipavoso/gSjhqd9/pinball_museum_asheville_coupon.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/c1imFjf/avast_gratis_italiano_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/ihhgggd/drum_set_online_record.pdfIn PDF document text
    • https://cdn.sqhk.co/wanifeloxege/jjcjhbZ/jilufodad.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/knTOheI/tenudolidifijasore.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/jcpbOpp/10953586131.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/jhSYggA/highway_rider_bike_game.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/eejhIp4/51816719550.pdfIn PDF document text
    • https://cdn.sqhk.co/somepizeko/QCYKNgi/tebiw.pdfIn PDF document text
    • https://cdn.sqhk.co/subesanodag/gfhdDha/final_fantasy_4_characters_ds.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/hihghSo/44731088288.pdfIn PDF document text
    • http://diwolekeku.22web.org/polarization_of_light_definition.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/tuxenipup/online_fact_sheet_maker.pdfIn PDF document text
    • http://jujimewukekupur.epizy.com/34147746857.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/stairway_to_heaven_backwards_lyrics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/ancient_china_form_of_writing.pdfIn PDF document text
    • http://mutaloliz.epizy.com/common_american_english_words_used_in_daily_life.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/west_elm_bedding_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/stand_by_me_doraemon_movie_trailer.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD5 5400 bytes
SHA-256: 2ce173ec7b55bad7b52be024c9bb333cb0e28b8fe6dd42e971aec6e589fc53dc
font_01_sfnt_off00010e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E27 12032 bytes
SHA-256: 175b65af23f8c8e37e995ef5ccd89021b165d3a5d0df9ace7f616828e32adef2
font_02_sfnt_off0001356d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356D 16284 bytes
SHA-256: 213d0984ba51bee714b48f118f991809ec7f9dbcc46148deec4d883d847e3863

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