Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b78050689d34c2b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-23 16:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f31b4edf1732335051caac7663d44fcb SHA-1: 050b38b98b26348a88316b2e122fa7f776ba0990 SHA-256: 3b78050689d34c2bc01fa68a5bea2b4dc67fac77ad0ab9ccab38f4f58f6d5a1c
96 Risk Score

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 0.9997

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://jottigo.ru/strik?utm_term=ending+of+araby+explained PDF link annotation
    • https://cdn.sqhk.co/zipirevofu/cTjfjbH/can_centipedes_bite_dogs.pdfIn PDF document text
    • http://fruits-summer.fun/17282995590fg04w.pdfIn PDF document text
    • http://lifeit.pro/677486399280ov3m.pdfIn PDF document text
    • http://intekzafast.online/brb_cable_catalogue4an1d.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/jCQQxwr/90_s_hits_album.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500189/normal_6034050ede149.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/tXhcgf9/siberian_husky_german_shepherd_mix_temperament.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/ihCijn1/ates_ve_su_10_bolum.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/nijudow/teclado_en_espaol_para_android_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/all_tv_channel_app_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/lotonivawizenaxojofaduziw.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/74639813506.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/fojusuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/thai_script_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/what_are_the_6_stages_of_developmental_model_of_intercultural_sensitivity.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_off0000d897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD897 5300 bytes
SHA-256: f283e12e92eead110fd969de2b54f9bd562c1f9050725e89df2935339d011266
font_01_sfnt_off0000eabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABF 10160 bytes
SHA-256: 8a28e785ad2518e12b99cf8d3a13dda4d9bc5f4554f1494d0c1c988681234880