Malicious PDF — malware analysis report

Static analysis result for SHA-256 84846772f1b6ce35…

MALICIOUS

PDF

81.6 KB Created: 2021-04-05 15:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ae7072fcf4a630da0b2666f8aca21b8f SHA-1: 73b1846b3062b9eaaf80c96e31b994f329a82313 SHA-256: 84846772f1b6ce35b7303469c275ead5fc9348ff0e9eebd82d5a1818565a7bc1
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, flagged by heuristics and ClamAV as malicious. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs within a PDF, combined with the high risk score and ClamAV detection, suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=pursue+verb+past+tense+english+exercises+perfect PDF link annotation
    • http://copyrighytsupport.com/letters_from_christopher_watts_book2zm9e.pdfIn PDF document text
    • http://lg-copyrightforms.com/any_audio_converter_for_mac_freeegy00.pdfIn PDF document text
    • http://durowan.sportsontheweb.net/mejujefojakasusatutav.pdfIn PDF document text
    • http://xitawefavam.medianewsonline.com/xakukisotawevedazuvoluni.pdfIn PDF document text
    • http://bigpleasure.ru/737187806432u0id.pdfIn PDF document text
    • http://appletopshop.ru/what_is_passive_tone_controlstgtt.pdfIn PDF document text
    • http://ses-paypal.com/how_to_get_free_answers_on_bartlebycvx7z.pdfIn PDF document text
    • http://banquepopulaire-fr.org/how_to_fix_a_maytag_washer_that_wont_drainw2wg6.pdfIn PDF document text
    • http://wefilevazobakeb.mypressonline.com/how_to_pass_nclex_rn_after_failing_twice.pdfIn PDF document text
    • http://zeraseb.66ghz.com/gatogufisutofi.pdfIn PDF document text
    • http://yourlivehelp.com/el_pequeo_vampiro_resumen_del_libroqocvx.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/gomaxod/agnathavasi_songs_lyrics_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/ben_10_omniverse_2_wii.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/free_disney_colouring_sheets_print.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/41473084082.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/bohr_models_ions_and_isotopes_worksheet_answers.pdfIn PDF document text
    • http://kojavigetizafi.epizy.com/luxededipi.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/taxujanalureleruzifiximal.pdfIn PDF document text
    • http://xumuritikoxuk.myartsonline.com/calendario_escolar_2020_y_2020_sep.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/automation_studio_5._2_full.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/loz_botw_dlc_guide.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_off0000f30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30C 5548 bytes
SHA-256: d0fdacb3af3e5af3cf87b11791fb30307efbc02496a3f91126267163d07920bf
font_01_sfnt_off000105ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105EF 15768 bytes
SHA-256: 52227d3613bcb632e7ec12ae59bca96a59bbb50744b22ed42ce414b6f1d24edf

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