Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cb146b8663e259…

MALICIOUS

PDF

75.2 KB Created: 2021-03-10 23:46:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 30b0d5907cca4b11c513eca06fe165f3 SHA-1: 18469f4ba9cf35c45d5c1e00238611360061c309 SHA-256: b2cb146b8663e25962a69ce67aa3159781bcb1024e6f37f84ec2cf1ae08d8d41
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 0.9993

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://kuzutuzo.ru/123?utm_term=electronics+and+communication+book+pdf PDF link annotation
    • http://befotuke.mywebcommunity.org/proceso_de_investigacin_de_mercados_tursticos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452865/normal_6029fed40b252.pdfIn PDF document text
    • http://gosepakaf.getenjoyment.net/79697633380.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/pmbok_guide_7th_edition_pmi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476148/normal_6033ea43dff42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484370/normal_5fd053cc65a81.pdfIn PDF document text
    • http://leziwazedo.mypressonline.com/ganavurajiwuvoduvab.pdfIn PDF document text
    • http://creamwalls.online/dapoxijesufo5773l.pdfIn PDF document text
    • http://loveworld.club/29581739481e0pep.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/sewofozotezasuwasotigegiz.pdfIn PDF document text
    • http://soinjaga.ru/voxofatow2zo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_60413084d99e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421939/normal_5fced9a7dfa03.pdfIn PDF document text
    • http://takipibimaxubov.sportsontheweb.net/donna_kabalen_niveles_de_lectura.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/arcsoft_showbiz_no_video_preview.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/jupoti/33594978894.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/explain_the_relationship_between_electric_current_and_magnetic_fields.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/indiabix_gk.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/test_de_raven_para_nios_informe.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/pazebujunuvefo.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/avery_5160_template_word_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/checkerboard_vans_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/xusezopulij.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_off0000e88c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88C 5460 bytes
SHA-256: b6a84b66f0a7ebcd2b98cc2dcb8f5da19e3e149c397da7d2b3e0c43134dc5de9
font_01_sfnt_off0000fb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB09 10732 bytes
SHA-256: 5392cbafbcd73a4b1882e30401d4a39ba7325291475063c6c0268fbc786a1fa0

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