Malicious PDF — malware analysis report

Static analysis result for SHA-256 35663b7364b52538…

MALICIOUS

PDF

112.2 KB Created: 2021-04-03 14:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 18320eb52e0869e54af445f684816d62 SHA-1: 5abeb2d61b4982a129b3f987ba03a230334a5246 SHA-256: 35663b7364b525389f209d7b8e1fd64167d2e320fd76a24365869aedf1d2ea3c
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 0.9994

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://jacksth.ru/award?keyword=parasitic+diseases+of+wild+mammals+pdf PDF link annotation
    • http://mofizikozi.22web.org/acca_f1_kaplan_revision_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/kuderoxuz/hajfkii/my_little_pony_harmony_quest_game_free.pdfIn PDF document text
    • http://befiwaxerepo.iblogger.org/constitucion_nacional_de_la_republica_bolivariana_de_venezuela_de_1999.pdfIn PDF document text
    • http://pidejofejan.iblogger.org/epson_home_cinema_2150_online_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/egiNghL/sas_zombie_assault_4_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn.sqhk.co/pulisamog/jjvkVrR/32207131738.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/dukajevo/68680123626.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/lively_letters_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/descargar_el_alquimista_paulo_coelho_gratis_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/how_to_reset_onkyo_tx-nr656.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/agbagba_firi_yoyo_by_lil_frosh.pdfIn PDF document text
    • http://febefijawifuja.rf.gd/puxotibikevasexukipaw.pdfIn PDF document text
    • http://fuginejazupede.rf.gd/farm_machinery_textbook.pdfIn PDF document text
    • http://towawopijoxodor.rf.gd/7110068705.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/dont_wash_clothes_on_thursday.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/carranza_s_clinical_periodontology.pdfIn PDF document text
    • http://kivitaxefasutup.epizy.com/new_mercedes_a_class_brochure.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/gogol.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/51708250254.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/jumedolofirexogim.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/my_pelonis_space_heater_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/95353448257.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/38853617007.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_off0001780b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1780B 5396 bytes
SHA-256: 5951bd9ea332ca8a2fc5d43c5b092c197df18118cb98848a6e0b8a0c99f14525
font_01_sfnt_off00018a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18A62 12700 bytes
SHA-256: 882129cb35552e221f6cf5e55a1659e9e37cace17c41b96cc2be9f187624c8c0

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