Malicious PDF — malware analysis report

Static analysis result for SHA-256 829ba00e8c792f52…

MALICIOUS

PDF

81.9 KB Created: 2021-03-20 15:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74ec57d6a86dd66311e01ae17938bcae SHA-1: 44ea4d5a504f9158eafb545dd63e3ab2c18de1e4 SHA-256: 829ba00e8c792f5201db4f941cbc26dfe8cf85274cb81c36eebd7495b3039249
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URI points to a suspicious domain, likely serving as a lure or a distribution point for further malicious activity. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://golowaki.ru/aws?utm_term=mitologia+griega+diosas+mujeres
    • http://usacreditscore.info/craftsman_3_4_hp_garage_door_opener_resetk95w4.pdf
    • https://cdn-cms.f-static.net/uploads/4423453/normal_602a4b816daaa.pdf
    • https://static.s123-cdn-static.com/uploads/4382186/normal_5fde01ccac104.pdf
    • http://muzhskoizhurnal.ru/kukulinujebeb1cep8.pdf
    • http://jolixasij.sportsontheweb.net/susolukajalurixavimubusi.pdf
    • https://cdn-cms.f-static.net/uploads/4450340/normal_601e20df2e94b.pdf
    • http://jogemutujup.22web.org/16466747092.pdf
    • https://cdn-cms.f-static.net/uploads/4393033/normal_5fd9be7d58bec.pdf
    • http://hamlikjorettoop.ru/sojokapoxakepomatulalilocm70z.pdf
    • https://cdn-cms.f-static.net/uploads/4419827/normal_5fe94db7da0aa.pdf
    • http://lnstagramservicecopyrights.com/pobowixisavakijuzemarepiu12ay.pdf
    • http://fesebenawasoz.iblogger.org/49362889058.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://8607b5f8-c2b2-49b7-a314-b17bd4efff40.filesusr.com/ugd/d99252_cc8dae60e2e14bec9707a53577bf5fdf.pdf?index=true
    • https://s3.amazonaws.com/gofilafixu/67962535292.pdf
    • https://s3.amazonaws.com/gogonof/tefepenenadeleferotuvemu.pdf
    • https://s3.amazonaws.com/lanaladu/my_garbage_disposal_stopped_working_all_of_a_sudden.pdf
    • http://tokavasetalan.epizy.com/july_somewhere_piano_sheet.pdf
    • http://kimatun.epizy.com/38185675674.pdf
    • http://zorogeloma.epizy.com/tfl_bus_app_android.pdf
    • https://26bfc7ce-baa4-43a1-9280-72312523cbd3.filesusr.com/ugd/5af86b_cc15a57eebc443f3b0a9f55c54d11b46.pdf?index=true
    • http://pusapovewazigu.onlinewebshop.net/survival_of_the_fittest_definition.pdf
    • https://0f939073-77d1-4307-aaa8-42539c8515e3.filesusr.com/ugd/85c9df_ed004f4f914b4562a11385e2e74121b8.pdf?index=true
    • https://s3.amazonaws.com/sixenogafopoj/80417722593.pdf
    • https://87098103-4d08-48bb-90a6-807b0ef734b2.filesusr.com/ugd/1f49de_61594b5696bb48b4a6c5a5c3c6f1933e.pdf?index=true
    • https://1a6c606f-1efd-495f-9370-57f425d809fd.filesusr.com/ugd/1be480_0dcae3ab6bcb4ce48dec18524f3a748b.pdf?index=true
    • https://s3.amazonaws.com/jidagafinuxesu/el_ambiente_laboral.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1e0.bin
a0e03958e1fc5194795a400a85e6055292127dc3efccbbe3f03c99cf5e1652a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E0 5004 bytes
font_01_sfnt_off000102eb.bin
ca0d630ab44a593d764e12eefb926b101bfefe4ddfc40a58ff3251e80279ba26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102EB 12068 bytes
font_02_sfnt_off00012a0c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0C 4324 bytes

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