Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd77f428dbaacff…

MALICIOUS

PDF

79.0 KB Created: 2021-03-23 10:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 7983b712dcbb835dfd14ede87412918b SHA-1: 2c9bf00fe64ef37a4a3b2b9f978aa5c324f2eaf8 SHA-256: 8cd77f428dbaacff62599fe58f1e4c430d6b7a5e06015e29c8108b320699dda2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, appears to reference camera specifications, suggesting a lure to a phishing or malware download site. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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=canon+elura+100+specs PDF link annotation
    • https://dufadijikog.weebly.com/uploads/1/3/5/3/135325035/jilufatowegarid.pdfIn PDF document text
    • http://floradoma.net/nitrogen_cycle_review_worksheet_answers3dfnf.pdfIn PDF document text
    • http://ludoviguboxulu.22web.org/rent_agreement_format_in_word_in_telugu.pdfIn PDF document text
    • http://mbfsopg.com/broken_heart_song_whatsapp_status_videom81xa.pdfIn PDF document text
    • https://difodofixipa.weebly.com/uploads/1/3/0/8/130814112/gitom.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/juferilanopaxigebipusodept58qv.pdfIn PDF document text
    • http://deemonatrafik.xyz/31606193738t1xau.pdfIn PDF document text
    • https://cdn.sqhk.co/xavipinav/lgiXHig/wagner_paint_sprayer_walmart.pdfIn PDF document text
    • https://kewivuzakokefi.weebly.com/uploads/1/3/0/7/130775129/xeralofifumidul.pdfIn PDF document text
    • http://temppicture.xyz/how_to_use_trx_bands11zd8.pdfIn PDF document text
    • https://cdn.sqhk.co/bezupidokaz/djaugeA/megan_thee_stallion_lyrics_wap.pdfIn PDF document text
    • https://serutoposax.weebly.com/uploads/1/3/5/3/135398922/6539116.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/godewumazek/auditor_report_format_icai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff78b0f4-1bd3-4736-880e-70239c89ce1b/how_do_i_put_my_call_on_speakerphone.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/frenectomy_procedure_note_template.pdfIn PDF document text
    • http://xilijimerufosat.rf.gd/is_seth_gold_married.pdfIn PDF document text
    • http://xovabegu.epizy.com/10099697795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72eb3c1-35dc-4110-b5d8-21d34e55b479/speed_queen_commercial_dryer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/alone_in_the_dark_1992.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54f6e259-2128-451e-b580-be0c73ede09c/miller_dynasty_350_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/3_button_maker_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/6221484313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ed785cc-393a-4ec8-a3ed-fed7d26e8c49/69947859500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c00a0d0d-7252-4518-9af6-2c32af576048/logitech_mk710_gaming_review.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_off0000f8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AA 5024 bytes
SHA-256: 85d49b2885082505f0f4797aa69f64991b4de87d641f7a7ec4013fed0ac4c9be
font_01_sfnt_off000109cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CB 10808 bytes
SHA-256: 56010eec7eaefde14941faa128528bef7281f495a5df56dbbea6e60a6c7f0e2a

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