Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd96a720ab1750d6…

MALICIOUS

PDF

73.9 KB Created: 2021-02-21 14:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 7c9da2c028c3c48262e8ae9fa70561ec SHA-1: 49253685b61a84b82f21f06e900fa9c8e0b9caed SHA-256: fd96a720ab1750d6787a210ca7374efdb17aaf7dc19eda7f1ece1132cb2033ba
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search engine result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of external URIs and the overall classification suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/strik?utm_term=what+is+electrical+design+engineer PDF link annotation
    • https://cdn.sqhk.co/jomawutid/geibbjd/47617789414.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417049/normal_5ffa0509bc617.pdfIn PDF document text
    • http://pressit.fun/automatic_disc_parking_systemt78k4.pdfIn PDF document text
    • http://fapseo.ru/31178683030xgvvd.pdfIn PDF document text
    • http://peuly.xyz/punctuation_worksheets_3rd_gradepbxg7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417990/normal_602483d7d2283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5fe99ae445f20.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/whfihJz/ribijuzagokazutuda.pdfIn PDF document text
    • http://pubifirona.22web.org/wudiz.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/JhgFgcW/frontline_commando_2_mod_gold_apk.pdfIn PDF document text
    • http://tublitalia.fun/interview_english_conversation1cm6y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_600e88b75f48d.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/d8idmaU/zedge_ringtones_and_wallpapers.pdfIn PDF document text
    • http://rapegutuxipik.22web.org/active_and_passive_voice_with_answers.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/jokotaziweluge/chelmsford_ma_accident_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/dazefemukaginevotif.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/donafezan.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/free_weekly_hourly_schedule_template.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/42164268080.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/mastering_biology_answers_chapter_13.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/pantangi_pambalana_worksheet_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/97493583731.pdfIn PDF document text
    • http://ditiruvovuluka.epizy.com/voniwidelizemo.pdfIn PDF document text
    • http://wowadepadon.rf.gd/intensive_and_reflexive_pronouns_quiz_with_answers.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_off0000e337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE337 5216 bytes
SHA-256: ac5e95c8d6c5fe9242159ffe9c41b8e664453eaa1820c4440add7265bfff79a6
font_01_sfnt_off0000f4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F8 10916 bytes
SHA-256: 1905453f3cdd109eb2e25a0048b6ad04f056e5b0c89a0498a95bf993703c1260

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