Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6b771ea8e869e4f…

MALICIOUS

PDF

87.4 KB Created: 2021-03-22 01:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c9aa49904589ed59b3866d81c9e66d1b SHA-1: 11c04e7a1b6a64f3db8a2da8b9a31e46f5b1b9d4 SHA-256: f6b771ea8e869e4f33a3e71900b03281b377f857ed78466352f2b68720007f55
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/award?keyword=tecnologias+de+la+informacion+6ta+edicion+pdf PDF link annotation
    • http://bilkaita.space/696790353297cpqg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5fef36722f30a.pdfIn PDF document text
    • http://sportplays.ru/xuxujabapavam9qpi3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403263/normal_6000f9055dd48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412896/normal_6055ffcba3716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489601/normal_603b963cbed31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393499/normal_60337fc22bca9.pdfIn PDF document text
    • http://micrometer25bill.site/adivina_quien_soy_esta_noche_sinopsis70e4r.pdfIn PDF document text
    • http://fatunatet.getenjoyment.net/runuwidewegasamalo.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/how_to_draw_cartoons_in_photoshop.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/why_is_my_honeywell_thermostat_blinking_leave.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/84802397089.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/rizijubovapuk/jemovidivukutavof.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/kubuwosasorinisutejatewin.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/300_blackout_load_data_2400_powder.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/navy_seal_training_length.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/tcp_ip_port_for_printing.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/vexafanogoz.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/sivuxoremobunopowokal.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/zx_spectrum_emulator_games.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/nusojuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/40190002484.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/what_do_esc_beeps_mean.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_off000105c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C6 5364 bytes
SHA-256: 1b3ef29902e251ac5017f3ae773a295fbb05b2e425f87c265279ab5da976133a
font_01_sfnt_off000117e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E5 12324 bytes
SHA-256: 75b170778cd0c2b47b3c8dbba47b484738f33fadf0bc2c2ddd9a1ae341d890c8
font_02_sfnt_off00013fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FDA 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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