Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54e9d1ad06359f8…

MALICIOUS

PDF

76.0 KB Created: 2021-02-23 20:36:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2c2eb3486ba6179dcd03196845b6d5f0 SHA-1: acb40b1b8f1a76c3543fb4bf2bb3f9981838d83a SHA-256: d54e9d1ad06359f8a4955d049f380f5d90a8c6ca243665e9e0b1391a1b3fb1a6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a phishing page disguised as educational content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or phish for credentials. No scripts were extracted, but the presence of external URIs and the document's deceptive content point to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=how+to+write+a+linear+equation+in+slope+intercept+form+from+a+graph PDF link annotation
    • https://cdn.sqhk.co/dukosisevu/ig0Mgik/retetasisakedut.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/TPeicjj/easy_english_short_stories_for_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/iihd8hi/bubble_bobble_gba_emulator_online.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/Ridijpx/sibitilixojupato.pdfIn PDF document text
    • https://cdn.sqhk.co/wosinuwukabu/jagchbG/90569242796.pdfIn PDF document text
    • https://cdn.sqhk.co/zixajofazadi/P9Hrggm/best_pop_music_2020_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xokebuzizo/6ijq0ih/dragon_kingdom_2_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/wapadofiwe/hgIhdif/wakunikifobi.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hgaZYXI/xonogujemajufutixixesi.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/G8iijja/catfish_dave_fishing_line.pdfIn PDF document text
    • http://dusosax.66ghz.com/pijisujewapi.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/PWggHVr/sms_research_marketing_services_inc.pdfIn PDF document text
    • https://cdn.sqhk.co/polopomoset/chcjdgc/megamind_2_cast.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://s3.amazonaws.com/nupotukig/analytical_methods_in_vibrations_meirovitch_free.pdfIn PDF document text
    • http://relumewamamit.rf.gd/98468978911.pdfIn PDF document text
    • http://biwajitakawa.epizy.com/88074398407.pdfIn PDF document text
    • http://xuguriganuzako.epizy.com/84650471945.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB20 5488 bytes
SHA-256: aa1130a11f51c23fbac84b619c1796a42ef2f527920c77cff18203d1cdeed8b8
font_01_sfnt_off0000edad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAD 11152 bytes
SHA-256: f3a3586196d17620497753acb3c549a3618d3cdb989d8294f5170fbc99fc1fff
font_02_sfnt_off000113a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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