Malicious PDF — malware analysis report

Static analysis result for SHA-256 6730e8c718ffae39…

MALICIOUS

PDF

84.1 KB Created: 2021-05-14 06:59:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: deee9cf856f73e7ed58ac0ea42ef5547 SHA-1: 881d6752fae2d4f897384b5627f77ad53f5f7b1d SHA-256: 6730e8c718ffae39e4ea932e81ccab941380a49e56dc8496ee5606ca14a918d8
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=what+foods+to+avoid+on+the+dash+diet PDF link annotation
    • https://cdn.sqhk.co/revinoxu/hc4Ggf4/tornado_rochester_ny.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/OjjhjLm/webizenixetozesabobuvorok.pdfIn PDF document text
    • https://cdn.sqhk.co/murefazomejo/dhdiczN/romantic_ringtone_free_download_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/gleieXQ/deep_sea_creatures_list_acnh.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxuduxexi/asjgig5/64159940135.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_15376db3cbca4749a6608891f6612391.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/palevijuj/vba_range_cells_different_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/experimento_modelo_atomico_de_sommerfeld.pdfIn PDF document text
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_38e2a778cb464f089c7316d421c1e792.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bepukuba/star_wars_thrawn_books_chronology.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/al_b_sure_night_and_day_mp3.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/hoover_windtunnel_vacuum_troubleshooting.pdfIn PDF document text
    • https://83d7d1d1-3661-4158-a2cc-78aa4aa39d08.filesusr.com/ugd/163759_5f404ec4212f47a7a6dd8c83fb0645f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wejuvono/95564318752.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/box_top_education_submission_forms.pdfIn PDF document text
    • https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_a4795cdb21a0464db055dfd8a8411b14.pdf?index=trueIn PDF document text
    • https://57eba762-b826-4879-8d7a-7f480aba2934.filesusr.com/ugd/e89c2b_ea18e1fe90664b218a3bbd6e23c1a571.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tokudapele/vujesufiwajun.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/blodgett_convection_oven_service.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/casio_g-shock_ga-100-1a1_battery.pdfIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_cec3b733c1f74cceb6177cd9a3a3689d.pdf?index=trueIn PDF document text
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_0572be5a1fb94647a414c1a8116197df.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDED 4728 bytes
SHA-256: 153decc72b095f89a45fc65ef169add29b0c0b543bd55c9529ba26344955f47c
font_01_sfnt_off00010e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0D 10888 bytes
SHA-256: 64e2dc0093b7c564813d15f286ea7cd1c6cf1f2252084d31eba5f10b16fc1b10
font_02_sfnt_off00013346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13346 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.