Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4d211f78b1cb70…

MALICIOUS

PDF

68.4 KB Created: 2021-02-24 08:54:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 310dc1aa75b51bbb343d3d93ee1d2b88 SHA-1: a7ddd4e3920090b94eea46fa51b2b9d8be0af403 SHA-256: 4c4d211f78b1cb70e9893de65d11ccf2e58d4920df9237fdf9714db3a6ad6d2d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an embedded URI pointing to 'https://baarspo.ru/strik?utm_term=2000+jeep+grand+cherokee+light+bulbs', which is likely a phishing lure disguised as search results. No scripts were extracted, but the presence of the malicious URL and the phishing detection strongly suggest an attempt to redirect the user to a malicious site.

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=2000+jeep+grand+cherokee+light+bulbs PDF link annotation
    • http://fufodew.22web.org/sonic_sega_all_stars_racing_transformed_metacritic.pdfIn PDF document text
    • http://skidki-day.shop/95999184895v6rc1.pdfIn PDF document text
    • http://fortuneo.biz/pivimu923pu.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/3g4gjRv/92370843185.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/84ieq48/free_download_music_videos_mp4_player.pdfIn PDF document text
    • http://nukicew.xyz/timuvetafu7bqpr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://janeresofopojaz.epizy.com/picsart_gold_mod_apk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/91891957500.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/35185588849.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/toefl_vocabulary_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/beethoven_para_elisa_acordes_guitarra.pdfIn PDF document text
    • http://jomewuborova.rf.gd/sinijuvanepixakuf.pdfIn PDF document text
    • http://mesovinofezesat.epizy.com/fagavonu.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/guided_math_workshops_in_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/giving_tree_tags_template.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/kemen.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/risk_assessment_matrix_template_excel_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/zebufopojudijebiwifeb.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_off0000ce4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4E 5792 bytes
SHA-256: 1460655cfd21deba81b21e2f858044549f12f2b40f14466cada0cf15cf021348
font_01_sfnt_off0000e1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FE 10340 bytes
SHA-256: 9b661337583148f21ac97a82230184502ca7ea758d06e328a7752bcdca80fdb9

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