Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76ae140e26c962…

MALICIOUS

PDF

83.9 KB Created: 2021-03-05 16:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 6636701eaaf5b767f06d5475d818398a SHA-1: 75ac0bab2d75c16a48892c8b7f0a16f0f706590c SHA-256: 3a76ae140e26c962ebe44e545bef1b70b15f13c065ae93be561d79a3de93d3a0
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 suspicious domain, likely serving as a lure for phishing or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users by directing them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wb?keyword=casio%20g-shock%20ga-1100gb-1adr PDF link annotation
    • http://sexezukekopipuw.22web.org/how_to_setup_tp_link_extender_without_wps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417526/normal_600a49911ee97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379054/normal_601fd7755c7d6.pdfIn PDF document text
    • http://timogefubor.22web.org/zidinib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391331/normal_5ffa2bdd7bec3.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/bivanud/papomoduf.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/anna_karenina_romana_vol_1.pdfIn PDF document text
    • http://lafasusatar.rf.gd/29588501989.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/xajeligaduzudinono.pdfIn PDF document text
    • http://fusupufe.epizy.com/40701528815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd4fa78-b2d1-43c0-9970-98217cf71304/el_amor_en_tiempos_de_colera_pelicula_en_espaol_latino.pdfIn PDF document text
    • https://17673d3b-e5d0-4e0e-8211-f079fadf35f5.filesusr.com/ugd/13ae68_534a2ec4692344b2a477ada43684c399.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/ms_drivers_licence_real_id.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5528b78e-0b76-41f1-a7c9-e31eee3b3394/1536566043.pdfIn PDF document text
    • https://c72a6d71-2fad-4f5a-8b7a-a7c165485bce.filesusr.com/ugd/a4966f_ea1d5341084a49fcb9be8e04cfc3813b.pdf?index=trueIn PDF document text
    • http://wovotunuvovon.epizy.com/bovip.pdfIn PDF document text
    • https://3f740848-0e57-4b51-8596-564812021bec.filesusr.com/ugd/cbe17c_d692c3b8e8ae4b77a072e577222fc638.pdf?index=trueIn PDF document text
    • http://palezepebarinot.rf.gd/diderezaz.pdfIn PDF document text
    • https://e18e6c05-101e-4f41-9c4d-f518aea09dbb.filesusr.com/ugd/7972b3_aa614105550f4a11a3173e888fc35908.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0532f407-ea50-4c99-a2f9-5e0faa2a534b/bojerufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d39d4e2-3a3c-47d3-9132-531c1ec5d3f6/75079454443.pdfIn PDF document text
    • http://lojupodinitaxug.epizy.com/tangled_before_ever_after_2017.pdfIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_4ecceac928c64945bea8c19c4d7789eb.pdf?index=trueIn PDF document text
    • http://sozizowumideni.rf.gd/87502916187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fe668d8-cecf-4dde-bb88-679b88e8b01e/1995_s10_wiring_diagram.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/83720059035.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_off0001099e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1099E 5504 bytes
SHA-256: 770cf74e43863939a6d89f69c7470e14d3e46e494356ce77133b2eb45e873f51
font_01_sfnt_off00011c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4C 10920 bytes
SHA-256: e98eb4dd877481b9a0bb8ee23b9f8caa343d8f0c5724287076852e940789c4dd

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