Malicious PDF — malware analysis report

Static analysis result for SHA-256 cffbd41ab1c8bcd7…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 14:16:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d76e54f4bf39e489a54d282115581498 SHA-1: b90c8f209ecb444710d08d6ee4c829082db3aad5 SHA-256: cffbd41ab1c8bcd7f3259b497116468d4ec941733c1ca06542607f7a53e19f23
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that is disguised as information about reading a blood glucose meter, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially leading to further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/award?keyword=how+to+read+your+blood+glucose+meter PDF link annotation
    • http://itasda.online/rarurekelojumire14ohm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486061/normal_5fcf303176c43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388165/normal_6002dd6dba36b.pdfIn PDF document text
    • http://4kuhd.me/samsung_ue65mu7000_specsu6iar.pdfIn PDF document text
    • http://winoorama.website/soal_tes_potensi_akademiks0uli.pdfIn PDF document text
    • http://goproonly.com/icloud_id_remover_software_freezkh4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384851/normal_5fc75ac2c104e.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/ljhpYbA/93138905549.pdfIn PDF document text
    • http://legionmone.xyz/operaciones_combinadas_con_fracciones_ejercicios_resueltos_para_primariao67ae.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/ehbczid/money_buster_mod_apk_download.pdfIn PDF document text
    • http://1ux.site/ableton_tutorialtvfk7.pdfIn PDF document text
    • http://photoforce.ru/julamesugipaxomawupad6qvkh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453885/normal_5fcf77a5a87bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369333/normal_5ff15bfe52002.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490133/normal_5fcdc81517814.pdfIn PDF document text
    • http://kieverts.xyz/ebook_reader_app_free_for_pcabfvz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488316/normal_5fe7c201625fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5fcb8d74b7647.pdfIn PDF document text
    • http://thrivewebs.com/free_marching_snare_drum_sheet_music306tf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000df41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF41 5552 bytes
SHA-256: ca237cc2c0f671c607469d2eeaeafc50648a87714c15079beae96eff9524688e
font_01_sfnt_off0000f224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF224 10664 bytes
SHA-256: a2857b7973f30b413e337b7349257b4c2378c7d943729b8d9a4d31b13a53c34c

Open this report in the interactive analyzer, or submit your own file for analysis.