Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebdbe0fd1b351823…

MALICIOUS

PDF

80.2 KB Created: 2021-03-08 14:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fd308c826d8782d95da1d38276080346 SHA-1: c646ec22e6eca7ef72f45f53645fcab22d1ec2a7 SHA-256: ebdbe0fd1b351823fb219144dc81af0bc47f5e8af928fadb068c3b25ddb2a72b
96 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, one of which, 'https://bologen.ru/123?utm_term=fixed+anterior+guided+growth+appliance', is directly referenced by a heuristic. The document body, though heavily obfuscated, suggests a technical or service manual context, likely a lure to encourage clicking the malicious link. No scripts were extracted, but the presence of multiple suspicious URLs indicates a phishing or malware distribution attempt.

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://bologen.ru/123?utm_term=fixed+anterior+guided+growth+appliance PDF link annotation
    • http://damvglaz6.xyz/spiritual_benefits_of_fastingn5s4v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470533/normal_5fded05fb16aa.pdfIn PDF document text
    • http://egrn-order.online/acer_aspire_3_a315-_51_service_manualyoyh4.pdfIn PDF document text
    • http://bnl-jobs.com/belkin_n450_db_troubleshootingmptiw.pdfIn PDF document text
    • https://cdn.sqhk.co/tagisaxozof/gHz0ghv/mosevutiwapetuza.pdfIn PDF document text
    • http://cashbackmoney.info/ding_ding_ding_tori_bangla_kobita_collectionlzypz.pdfIn PDF document text
    • http://opros.xyz/savoir_parler_en_franaisn6n5h.pdfIn PDF document text
    • http://kefets.xyz/207974974273m3kh.pdfIn PDF document text
    • https://cdn.sqhk.co/murerezusa/gjdriel/12085838106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_60152f7385f1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426679/normal_6037e034adcf3.pdfIn PDF document text
    • http://about-central.com/711727962878hb7w.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/fe6A6Uj/7662753318.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_6022c480afbce.pdfIn PDF document text
    • http://hook-up.fun/sociology_in_gujarati74qn0.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/wenobagupexekap/tojorimuvavuwonolajo.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/subclinical_hypothyroidism_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/sejuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/53252688790.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/zezeziwe.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_off0000fce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE7 5272 bytes
SHA-256: 63665691e06fd373fa282d5aa22f28a5cafd8d702e7e7a2ffb1061a94587c7fb
font_01_sfnt_off00010eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EED 10632 bytes
SHA-256: eb9a707f3c6d5cb368aeef89a8269d734bd4ddcc3411d96b49d2bd46c147a8b4

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