Malicious PDF — malware analysis report

Static analysis result for SHA-256 12dc3e850fb2615d…

MALICIOUS

PDF

86.4 KB Created: 2021-03-31 10:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1a725f3a537876fc057f42af4e1ed592 SHA-1: 544f4a1fa928b7b127c7d5927c475022607b1f05 SHA-256: 12dc3e850fb2615d9b7a79d2efb31c5dc1a8222081fc1e807a182646c5ba7c9b
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://midufefew.ru/123?utm_term=non+convulsive+status+epilepticus+guidelines PDF link annotation
    • http://vaxenovutejuzid.sportsontheweb.net/88692679329.pdfIn PDF document text
    • http://suwufexez.sportsontheweb.net/how_to_operate_a_ge_self_cleaning_oven.pdfIn PDF document text
    • http://wififej.mypressonline.com/beauty_and_the_beast_script.pdfIn PDF document text
    • http://zukoretevir.medianewsonline.com/jobodamewaterunebi.pdfIn PDF document text
    • http://nuwetiveguvo.mypressonline.com/sorilaz.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/chopin_prelude_6_analysis.pdfIn PDF document text
    • http://goxutasabadatum.sportsontheweb.net/89889935015.pdfIn PDF document text
    • http://zazeteku.iblogger.org/96399168011.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/ks2_reading_comprehension_worksheets.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/goviwigax/910807466.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/padirakovojutivutimigo.pdfIn PDF document text
    • http://raxovasupu.rf.gd/99_names_of_allah_in_urdu_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/stock_market_open_today_canada.pdfIn PDF document text
    • http://nekofixas.rf.gd/friedel_crafts_alkylation_chemguide.pdfIn PDF document text
    • http://nixabofivi.epizy.com/73219125829.pdfIn PDF document text
    • http://rakixufemagotut.atwebpages.com/9285432969.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/pexereferewunawafikepu.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/21516298592.pdfIn PDF document text
    • http://napubuxuwel.epizy.com/absolute_value_equations_worksheet_answers_with_work.pdfIn PDF document text
    • http://magivaxinel.rf.gd/sasadazulare.pdfIn PDF document text
    • http://lozufoxozaniso.rf.gd/post_behavioralism_in_political_science.pdfIn PDF document text
    • http://vawirir.atwebpages.com/biodata_format_for_marriage_in_marathi_language.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_off0000fe93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE93 5176 bytes
SHA-256: b3a543d4ded316776b1fe0f3f39ecaa4e15fca4df1679939a9c7cb7bd17c2b13
font_01_sfnt_off00011056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11056 11244 bytes
SHA-256: 6758d5752585e30dd3fa5e5c8f3ff349b0b0923adf644590891a991404ab75c0
font_02_sfnt_off000136e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136E7 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90