Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21f8bbe29e6be69…

MALICIOUS

PDF

76.6 KB Created: 2021-03-10 10:07:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d663d3c54f130d332f5c2df339b7c166 SHA-1: 46bae0a7a28b6edb82bec37524c1303ca5ea18c9 SHA-256: d21f8bbe29e6be6900e0bfa1c015e0efb3519484a0a32a9f8aca484db2c1561b
166 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains multiple external URIs, including an invisible link to 'http://lnstagram-support.live/sudoku_solver_online_3x322sbp.pdf', suggesting a phishing or credential harvesting attempt. The PDF also functions as a link farm, directing users to various domains, which is a common tactic for distributing malware or conducting further phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=arcade+near+me+open+today PDF link annotation
    • http://koteyarn.moscow/startup_ranking_2020ntokc.pdfIn PDF document text
    • http://ziziwaluso.iblogger.org/valor_de_moto_yamaha_fz_1000_modelo_2008.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/YBicgfq/2498244203.pdfIn PDF document text
    • http://lnstagram-support.live/sudoku_solver_online_3x322sbp.pdfIn PDF document text
    • http://poroda.site/3d_printed_house_cost6swxy.pdfIn PDF document text
    • https://cdn.sqhk.co/fusozuwalas/iaijEif/98085812889.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/iRMejeD/teachers_federal_credit_union_holbrook_address.pdfIn PDF document text
    • http://leree6.club/babu_jamidar_punjabi_video_songqr10u.pdfIn PDF document text
    • http://banquepopulaire-fr.org/1768379656v4c0g.pdfIn PDF document text
    • http://grandov.pro/574329175205l07b.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/engcq8O/18581569149.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/taguxif/the_great_divorce_summary_chapter_10.pdfIn PDF document text
    • http://vobogiv.rf.gd/dipped_products_plc_annual_report_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/sudevejerifu/sedevamosi.pdfIn PDF document text
    • http://vizulubafaxal.epizy.com/classical_and_neoclassical_theory_of_management.pdfIn PDF document text
    • http://kidaxuv.epizy.com/instagram_photo_booth_prop_frame_template.pdfIn PDF document text
    • http://tutivute.epizy.com/samsung_j200g_imei_repair_tool.pdfIn PDF document text
    • http://funasuruwet.epizy.com/cpp_death_benefit_application_information_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/how_to_train_your_dragon_2010.pdfIn PDF document text
    • http://fumibomi.epizy.com/best_truck_sim_game_for_android.pdfIn PDF document text
    • http://xewowibaxe.rf.gd/adobe_acrobat_x.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_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 5100 bytes
SHA-256: 6cab9b77ae358bd986e38391c012f543f859ae12505552af3b643b60a09688b0
font_01_sfnt_off0000f634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF634 15300 bytes
SHA-256: 0d4aa8269cef9a47245dbb826004f4d880ea5b73dc00872996bb824cd64cdc98

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