Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f48e740ae560e9…

MALICIOUS

PDF

78.1 KB Created: 2021-04-06 07:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9718550e7eb61fdb937cdf4a41591ce1 SHA-1: 2a63ea650470efbb0243fa2efa83b517840f6b93 SHA-256: f5f48e740ae560e98d55da4d712355c5610cba8c6c165fc559c079be987d28da
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that appears to be a lure related to tractor parts, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or redirection attack. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it may leverage JavaScript or other embedded content to facilitate the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/strik?utm_term=john+deere+x300+transmission+pulley+replacement
    • http://ginumon.iblogger.org/telugu_chalo_dj_remix_songs.pdf
    • http://powuvomewekuxeb.getenjoyment.net/sorewazanowamikuf.pdf
    • http://jalimojaben.iblogger.org/gimutegok.pdf
    • http://sutarakikim.scienceontheweb.net/night_walkers_and_mystery_mongers_summary.pdf
    • http://canonsburglake.org/romujezizofudalofirifomija8w1m.pdf
    • http://raxajifiwovoj.iblogger.org/reading_and_writing_grade_11_lm.pdf
    • http://giwapozolaleg.mypressonline.com/kizulovuramaliwemol.pdf
    • http://jawixogu.mygamesonline.org/wutuvipajiperan.pdf
    • http://sosepojidoduxad.iblogger.org/causes_of_job_stress.pdf
    • http://govnososal.xyz/47420436804ue233.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/damerirazib/baazigar_movie_song_video.pdf
    • https://s3.amazonaws.com/popilo/how_to_deal_with_interpersonal_conflict_in_the_workplace.pdf
    • https://s3.amazonaws.com/pigolo/answers_for_what_are_your_strengths.pdf
    • http://vujuvisesakok.myartsonline.com/lp_askep_bronkitis.pdf
    • http://vafipisepofowo.epizy.com/legabusaloteb.pdf
    • http://taluxukuvasule.epizy.com/6518684227.pdf
    • http://votoromuw.epizy.com/ramagajajej.pdf
    • http://jazupizewatabal.epizy.com/ruwajusoxu.pdf
    • https://s3.amazonaws.com/fakuguvil/original_marksheet_up_board_2012.pdf
    • https://s3.amazonaws.com/vosimalume/star_stencil_template_printable.pdf
    • https://s3.amazonaws.com/lekezaru/godomififikikofiwarol.pdf
    • https://s3.amazonaws.com/jivuxo/find_duplicates_in_excel_between_two_sheets.pdf
    • http://xuzujokavagud.epizy.com/75476143272.pdf
    • https://s3.amazonaws.com/forupokisip/giwozexibetux.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef9e.bin
fe7776c70a218918533ab5b810cbee0be97e5d6b63e651c4c5b70021ca1061da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9E 5776 bytes
font_01_sfnt_off0001032c.bin
00e5e4a9ae58869f85f50cf4cbe336f7892a032740f6890b5ef35c3a86b075ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1032C 10836 bytes

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