Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b985722afc5c331…

MALICIOUS

PDF

85.6 KB Created: 2021-03-25 05:34:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 75e38ae97b5773d77cad42fe83561bd1 SHA-1: 57fdf483ba818618973e663b7f8a4280234207b9 SHA-256: 8b985722afc5c3310aef29e326951b173fb5755bd004ca42534bf6da0695e557
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/award?keyword=triangle+rectangle+et+cercle+circonscrit+4%25C3%25A8me+cours+pdf PDF link annotation
    • http://livobagoxepat.iblogger.org/dictionnaire_franais_anglais_finance.pdfIn PDF document text
    • http://sagebiwepul.22web.org/investigation_4_diffusion_and_osmosis_lab_report.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/how_to_reset_a_braun_thermoscan_thermometer.pdfIn PDF document text
    • http://fusobilel.iblogger.org/23170225347.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/tijcgdi/53658800931.pdfIn PDF document text
    • http://jofijuke.22web.org/volleyball_rotation_sheet_6-_2.pdfIn PDF document text
    • http://xuluxefi.iblogger.org/why_does_my_viper_alarm_keep_beeping.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/hinSaNW/suxelenobas.pdfIn PDF document text
    • http://sudidukof.22web.org/past_progressive_tense_worksheets_year_6.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/gumegulaxi/chiari_malformation_pillow_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/serovetewezizadu.pdfIn PDF document text
    • http://wujumowe.rf.gd/administracion_de_pequeas_empresas_un_enfoque_emprendedor.pdfIn PDF document text
    • http://zakuvusebaj.epizy.com/baker_act_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/65694349342.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/habbo_hia_trading_pass_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/how_to_set_ge_digital_timer_15079.pdfIn PDF document text
    • http://vewajelawukos.rf.gd/2282118998.pdfIn PDF document text
    • http://muvusewogazobil.rf.gd/navigation_drawer_with_bottom_bar_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/rugujavitinijalenomafog.pdfIn PDF document text
    • http://tovanafinavo.rf.gd/bsc_1st_year_mathematics_notes.pdfIn PDF document text
    • http://zapivevo.epizy.com/netubufubidejufojesos.pdfIn PDF document text
    • http://nibevelasixov.epizy.com/56013195001.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_off0000ef5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5B 5656 bytes
SHA-256: 2d2a3b1d74533320320549f64dc2f355c226866b877c197788a5cce6bdfe9da2
font_01_sfnt_off00010246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10246 13664 bytes
SHA-256: 40b5817e4399f65bbf81d0b9a0197e13584840dc210c632f6a8997cc0cdb4ff3
font_02_sfnt_off00012e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E16 16620 bytes
SHA-256: 7dfcb40671ff23985dc4d8d13f31876a111863304b59fe17a947611a5fbd6774

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