Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb68ad86af76e427…

MALICIOUS

PDF

80.9 KB Created: 2021-04-03 16:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 59beaa52997dae09ab43fefcfc396480 SHA-1: 01e0ef1e47da9b149c8454aaa3f60e61be7bc93f SHA-256: cb68ad86af76e42728435bd097853fdf17a5620c25b530b4ef7d4da29a24107d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also flagged this PDF with a high probability of being malicious. The embedded URL and the overall context suggest a phishing attempt, likely to deliver a second-stage payload or steal credentials.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=samsung+smartcare+vrt+plus+washer+sc+code In PDF document text
    • http://meetsol.xyz/24614681473hn7q.pdfIn PDF document text
    • http://p-kavkaza.ru/how_to_start_craftsman_4_in_1_yard_vacuumkjduo.pdfIn PDF document text
    • http://peskomment.ru/sefefosawenokibejonokewawbj17.pdfIn PDF document text
    • http://phtech.site/boss_telugu_film_songsumpv9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412909/normal_5feb5de8887ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479470/normal_603ed0eeb28c4.pdfIn PDF document text
    • http://nerroba.info/energizer_nimh_battery_charger_flashing_redeapp2.pdfIn PDF document text
    • http://arendaavto.taxi/49881460036fh64e.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/gazijewevan/xitasibugeba.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/dir_615_router_speed.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/math_addition_worksheets_printable_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/galvanized_sheet_steel_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/chess_app_puzzle_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/php_ajax_zip_file.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/56521422508.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/razuvezesopujufimu.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/damage_report_rent_a_car.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/vederevupinuzasiloje.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/arcsight_connector_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/lifestealer_guide_7._20.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_off0000fc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC95 5744 bytes
SHA-256: 4a0b8cded71abc85c202c89d26fe21deb0729b631c5f96b26948d22e2473c8fc
font_01_sfnt_off0001100b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100B 11256 bytes
SHA-256: 03ce539cf2d1206da65fb4941e22006bbfddac416fb5afd2f950ff79bfceb52a

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