Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e612e65ddbff657…

MALICIOUS

PDF

77.7 KB Created: 2021-04-01 21:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 497a16b9e8a9d8dc37d683ea544bde8f SHA-1: b16143bb27fa792c6a2a703031b363744b3837fc SHA-256: 9e612e65ddbff657b954cabeb5aef073495a705a9a3a512a3bf148868446fcbe
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a lure for a workout plan. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of an external URI suggests an attempt to download a second-stage payload, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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/award?keyword=workout+plan+for+fat+loss+pdf
    • https://cdn.sqhk.co/jipogidara/b8JyP0t/eye_care_doctors_near_me.pdf
    • http://rosovutuwonemis.iblogger.org/crystal_reports_redistributable_crredist._msi.pdf
    • https://cdn.sqhk.co/woragumokewi/chBThhZ/aadhaar_card_password_recovery.pdf
    • https://zekaxuwamawebi.weebly.com/uploads/1/3/5/9/135961115/xanusezov.pdf
    • https://notolunezoxab.weebly.com/uploads/1/3/4/8/134846452/rerutijagir.pdf
    • https://xaporavuxeboj.weebly.com/uploads/1/3/2/6/132695407/jimumoka.pdf
    • https://cdn.sqhk.co/rufosopufu/hhgdfjc/37004145094.pdf
    • https://suruwizad.weebly.com/uploads/1/3/4/7/134766156/9b65e9454.pdf
    • http://medebux.22web.org/muzavupefuzabebanu.pdf
    • https://cdn.sqhk.co/doginifa/GjfGPha/ecology_is_the_study_of_life.pdf
    • https://zoxusikajikad.weebly.com/uploads/1/3/4/8/134851315/3081115.pdf
    • http://xexogafuko.22web.org/hourly_schedule_template_printable.pdf
    • https://cdn.sqhk.co/bomemenun/enehhVH/govobufugolosapelem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://berowajadodi.epizy.com/18593575404.pdf
    • http://lawigut.rf.gd/lochinvar_knight_boiler_prices.pdf
    • https://s3.amazonaws.com/legesiliv/kupixavibozopogiluramam.pdf
    • https://uploads.strikinglycdn.com/files/08856159-63e8-43c9-9cdb-eeaf46995438/15927780401.pdf
    • https://uploads.strikinglycdn.com/files/267722e0-64b1-4a48-afef-c9f91e8b5928/how_to_get_day_formula_in_excel_from_date.pdf
    • http://patenat.epizy.com/42800505968.pdf
    • http://vipiwimepi.epizy.com/26432629773.pdf
    • http://fopagozijudiri.epizy.com/corrugated_asbestos_sheet_weight_chart.pdf
    • https://s3.amazonaws.com/genukopapovixo/the_art_of_mixing_by_david_gibson.pdf
    • https://uploads.strikinglycdn.com/files/6cbb3dfe-1757-49ef-b98b-46ab0060260d/93355953684.pdf
    • https://uploads.strikinglycdn.com/files/9452b804-471d-4d37-b7af-62b7533a4f3a/how_to_pair_beats_studio_wireless_1.pdf
    • http://zapuwoz.epizy.com/sharp_android_tv_32_inch.pdf
    • http://xisutep.rf.gd/85409125147.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f348.bin
97735eb063167a6b3c9013041d88ec4add6a420cd05e2caa6b893a5a58faf4b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF348 5112 bytes
font_01_sfnt_off000104cf.bin
d54d77655784738c8c4fc075bdf626b2c30a06ffea2b28ffc4ecbbb6d27d666e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104CF 10348 bytes

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