Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb69e958890d021e…

MALICIOUS

PDF

86.7 KB Created: 2021-03-11 05:45:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 11ba2fed9a811969341583030dcb9a95 SHA-1: 44f6577a2cbba5ad717e55945befac1452a253c1 SHA-256: cb69e958890d021ed08cdde5f2781a890c1998562c5ee80646373363a3288290
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'druttle.ru/award' suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document, likely a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=annotate+pdf+evernote PDF link annotation
    • http://vuruboxaviripan.22web.org/wagner_paint_sprayer_parts_nz.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/gdk4fyL/best_slot_games_win_real_money.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/ifcWCij/airbnb_near_me_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/NBgfwFQ/revenge_of_sultans_hack_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/tgMjdjd/21618458197.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/lphdifh/piwojuvudusonoz.pdfIn PDF document text
    • https://cdn.sqhk.co/lunemitibojo/Mjegh1I/62940865168.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/hifKgeU/buzzer_beater_sound.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/SZHmdgc/cat_warehouse_shirts_william_osman.pdfIn PDF document text
    • http://selasudopudisom.iblogger.org/what_is_the_least_expensive_bernina_sewing_machine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pezuxegoweniger.epizy.com/dovefa.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/how_to_use_midi_controller_with_garageband.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/eau_guidelines_renal_cell_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/cake_design_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/xevosot.pdfIn PDF document text
    • http://petilawunabebi.epizy.com/44336604973.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/vunezodopumevofeb.pdfIn PDF document text
    • http://tujuluj.epizy.com/what_mental_disorder_do_serial_killers_have.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/pabanapibokenan.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/toastmasters_table_topics_master_duties.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/linozitokosa.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/27239718215.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/esc_congenital_heart_disease_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/90376343400.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/4609231244.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_off0001182f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1182F 4876 bytes
SHA-256: 55c9223c10a27adf76b3ed21ba79f6af1ea90b6dc26b35befd29d3a3e675eacd
font_01_sfnt_off000128e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128E2 10592 bytes
SHA-256: 204721d9a0962fac21f38cab07a548bc18cb6ef8fd68262d95f467fd5e55c7a7

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