Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee83e10a27cc3c3…

MALICIOUS

PDF

77.8 KB Created: 2021-03-08 12:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b037a6cbddfd7761c846f85c239e7fe1 SHA-1: f0707db7a49e9e58921cac894735eab744f9a4e4 SHA-256: 7ee83e10a27cc3c3eb55fe5d7961ef5ec49434c0dc331feb051d8b4778eaa6bf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a search result page, likely a lure for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to potentially malicious content.

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://jacksth.ru/wb?keyword=toddler%20stories%20read%20aloud%20online PDF link annotation
    • http://ejqy.com/72974503980k5sbn.pdfIn PDF document text
    • http://arendagg.xyz/15345022740vmwpj.pdfIn PDF document text
    • http://yourlivehelp.com/medical_microbiology_course_objectivesap1sp.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/charente_maritime_tourisme_guide78gaq.pdfIn PDF document text
    • http://yozi.store/kamobotizomakyxbdj.pdfIn PDF document text
    • http://idealslimitalia-official.site/xopojotidasosotijirevkwv1i.pdfIn PDF document text
    • https://nibovipuduri.weebly.com/uploads/1/3/0/8/130814681/kipefu-jaliviz.pdfIn PDF document text
    • http://faceit.su/82476611011tdjof.pdfIn PDF document text
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/1210264.pdfIn PDF document text
    • https://zafatuxowusetex.weebly.com/uploads/1/3/0/7/130739053/jugifuferonezikomib.pdfIn PDF document text
    • http://brumbum3.xyz/how_does_adaptive_servo_ventilation_work8o01b.pdfIn PDF document text
    • https://fegikunula.weebly.com/uploads/1/3/4/4/134482285/3852872.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/daselex/cs_energy_annual_report_2012.pdfIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_651f43ac165c426c83321d643d2d0026.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/purawuma/godowasadozukidiki.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/hepatitis_c_powerpoint_presentation_templates.pdfIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_0a860414beca46beb1bfe0364cdc1568.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/zokuwepiwutezugupijisop.pdfIn PDF document text
    • https://c63ca81c-6df4-4ec3-bc2e-8508f29a6879.filesusr.com/ugd/d48fe3_70f1816cca024a29b0ed8f48a51e7530.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81A 4652 bytes
SHA-256: f34f1ce197d719a00bed9a505210a9faf071002f5b520442494e37fbc8b146a5
font_01_sfnt_off0000f7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E8 10672 bytes
SHA-256: f5e147f093b28a346d035f7047765ea53a2b85271ee265f8cc8129bcf20ac540
font_02_sfnt_off00011bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BEC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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