Malicious PDF — malware analysis report

Static analysis result for SHA-256 c490768f6eb7b919…

MALICIOUS

PDF

81.5 KB Created: 2021-03-23 02:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 1c319234c85863038c1998e9b45946ea SHA-1: 73dbbd52c04bd38186c706e6e556b5711e22ae70 SHA-256: c490768f6eb7b9197a81b19f4436991341ef16ccc1e4c9be2bbcb23d66ec2f1e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that is likely used to deliver a malicious payload or redirect the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are typical of malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=el+aprendiz+de+brujo+pnl+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/delotijuw/YyZvhiy/domifamobogixupiteteji.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/fpgB3Ir/margaritas_near_me_open_now.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366973/normal_5ffd00ed8a981.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_5fc6ca2b9e1c4.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/sorowenodepex.pdfIn PDF document text
    • https://cdn.sqhk.co/kutogudofi/6igjbhj/i_wish_you_were_here_lyrics.pdfIn PDF document text
    • http://xewixawagupip.iblogger.org/loratepuvomafazabes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_603e6d4bf275b.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/bugutaj/code_review_checklist_template_c.pdfIn PDF document text
    • http://mopuriruwinufi.epizy.com/youth_basketball_training_program_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/35330420262.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/free_printable_peacock_wedding_invitation_templates.pdfIn PDF document text
    • http://rajufiminerux.epizy.com/briggs_and_stratton_vanguard_16_oil_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/dupizurezutazabudadoridod.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/viviparity_in_insects.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/what_red_wine_to_use_for_lamb_shanks.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/31441960593.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/awelewa_by_gabriel.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/27945491392.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/papupefakasafagonatopu.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/what_does_jewels_mean_in_the_bible.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 5316 bytes
SHA-256: b72d79c1b910fe73c427e94bce24e93fa30698e116020ff481ad5ddf8b1cb222
font_01_sfnt_off000102ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EC 11776 bytes
SHA-256: 342703d5b320e98b907dfb6a1ef83472ee2f22a201244208f1769ce451cc5be8
font_02_sfnt_off00012916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12916 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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