Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ae9cd64cf081c3…

MALICIOUS

PDF

80.9 KB Created: 2021-04-06 19:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3853453f2d8f38b6e2337e778084863a SHA-1: 2f1bd00bfdb13deba7fec8bf458e656db7771315 SHA-256: 92ae9cd64cf081c3b2db84071fcdb123a002d06f2ab5980eda30df9164a179d4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text fragments that appear to be search result titles, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/aws?utm_term=carl+rogers+humanistic+approach+supervision PDF link annotation
    • https://cdn.sqhk.co/xuxiropuwomo/jazghmo/hitmasters_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501654/normal_5fcecb4b262c5.pdfIn PDF document text
    • https://cdn.sqhk.co/rizonozugaj/hgfgiij/tulitodawipiposabusa.pdfIn PDF document text
    • https://cdn.sqhk.co/zesozote/hdigrje/sky_force_game_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mamidusidozu/ErAz3ie/how_to_draw_halloween_house.pdfIn PDF document text
    • http://yourcy.com/plural_of_compound_nouns_worksheetnjlkc.pdfIn PDF document text
    • https://cdn.sqhk.co/fipufose/dCyhdhf/secret_animals_crossy_road.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420039/normal_605f84e89075c.pdfIn PDF document text
    • http://redtea.space/siresazopademamilageath04.pdfIn PDF document text
    • https://cdn.sqhk.co/lasumalena/8ijd3y8/belazazelejegirivu.pdfIn PDF document text
    • https://cdn.sqhk.co/moxasapiwer/aVikhds/28654301914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457281/normal_6005c96e397b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9465b2c-1a94-4362-958c-1807ca51e796/countable_and_uncountable_nouns_esl_elementary.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/haryana_b._ed_date_sheet_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eab67b9d-a433-4292-a68c-73649e111318/process_dynamics_and_control_3rd_edition_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3112d9d-ecff-4e91-9748-0bf88b2e7da5/kuvafuxawebafotamezosevem.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/memapupisofoson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e558629f-903c-4ea9-b638-014b7ced6e7e/satellite_communication_system_advantages_and_disadvantages.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/wuzera.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_off0000fea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA4 5312 bytes
SHA-256: 372a24249a40b6f27ea653d3709fdcc7c6deb92082e38271eb6bf400c369f751
font_01_sfnt_off00011093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11093 11104 bytes
SHA-256: 17469e28a99da130d3d6abbe8c4faf1f4870a8dc39a141370259b411f9792d1c

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