Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb10ae37dcdf377…

MALICIOUS

PDF

73.1 KB Created: 2021-02-16 22:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e1bb223207cde0275eb802985e5ca6c9 SHA-1: 555582379975d88ff5d08568a0e112ee77822bd6 SHA-256: dbb10ae37dcdf377adf64daa03c69a75a9883bb71e9877fe5219226cc27fb208
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, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=sharpe%2527s+tiger+pdf In PDF document text
    • http://1offpark.xyz/uefa_champions_league_draw_bleacher_reportukwrq.pdfIn PDF document text
    • http://businesslinecenter.com/regedoten2jbin.pdfIn PDF document text
    • http://itchia.space/basic_ecg_interpretation_for_nurses_pptlnjr7.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/j0gc51D/bingo_board_numbers.pdfIn PDF document text
    • http://tonagruz.ru/875853028155i8jt.pdfIn PDF document text
    • http://leoidet.xyz/moto_tour_racer_pro_traffic_challenge_2019_schedulekynze.pdfIn PDF document text
    • http://talkme-news.info/sudumuwolop7bro.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/bCc9ihj/36549389204.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/fD97jhT/authentic_nba_basketball_hoop.pdfIn PDF document text
    • http://creamwalls.online/gupuzonepuomed0.pdfIn PDF document text
    • http://idealicaitalia.website/sudabupaduvolepi7wdx8.pdfIn PDF document text
    • http://dommasters.site/bayonetta_smash_bros_guideww1cy.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/rawesaragegugar/53790771082.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/annual_general_meeting_of_cooperative_society_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/practice_a_angle_relationships_in_triangles_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/cute_baby_wallpaper_images.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/98898848299.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/commando_2_movie_free_300mb.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_off0000e2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A1 5408 bytes
SHA-256: 902a78f35625b0b152701e126c59fd1b3f8cf448091408ffdf774e7eda98cfbd
font_01_sfnt_off0000f502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF502 10152 bytes
SHA-256: 9d4a3d261a83bf261076c256db7632ee25b5905fe9ac83185b36d55380e8c78c

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