Malicious PDF — malware analysis report

Static analysis result for SHA-256 d357608e564ca24e…

MALICIOUS

PDF

87.0 KB Created: 2021-02-26 14:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6092d91a012d2e1c7049fa44e123ffa4 SHA-1: 78ee537b740d946bf9ed22121689614ae02edfd3 SHA-256: d357608e564ca24e7a8c9291eaad3d6b547d111a82e3b47eeb246ad027669c3d
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Minolta srt 201 images', likely a lure to direct the user to the malicious URL.

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://baarspo.ru/award?keyword=minolta+srt+201+images PDF link annotation
    • http://lizoguxumugef.mywebcommunity.org/how_to_put_a_kerosene_heater_back_together.pdfIn PDF document text
    • http://zuregazezoral.mygamesonline.org/moto_g7_plus_user_manual.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/gowupuzokowuxes/32772534085.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/react_native_animated_android_slow.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/daxodexuvugapu.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/laguje.pdfIn PDF document text
    • http://vokesakogo.onlinewebshop.net/bulefurukuxobogeno.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/google_camera_for_pocophone.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/ford_ranger_raptor_spec_sheet.pdfIn PDF document text
    • http://tupaguwojisese.rf.gd/default_explanation_letter_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/takeuchi_tb260_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/moripuralofe.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/94855132866.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/ar_15_magazine_pin_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/tirip_marathi_kadambari.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/lametanodusesimajorob.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_off0001194a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194A 5336 bytes
SHA-256: ecf4ef2baf33fb354bc45a3e2f111ab6b4365f7a3d886ab4e18addba13e66a32
font_01_sfnt_off00012b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B67 10476 bytes
SHA-256: b73e6c5a2fd04e23e16f23a161d9feb2359658bdf733df607601782c714e8141

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