Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e42173fe2df075…

MALICIOUS

PDF

72.7 KB Created: 2021-03-16 01:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 046a634b5e54c033c4c26cbf37dd2b90 SHA-1: 5961981b11d1a1c62626180800d63117674bdaf1 SHA-256: c7e42173fe2df075aa4483ff39d9028d87ffd92e9efea0f40a946c81312b587a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. 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 a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=jb+heslips+driving+school
    • https://static.s123-cdn-static.com/uploads/4490720/normal_5ff0a1e19b1ac.pdf
    • https://cdn.sqhk.co/zaviresodew/hathaih/rujumokakababatifofami.pdf
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5fdb78d393b3c.pdf
    • https://cdn.sqhk.co/mofosalamo/jihdOha/7_minute_training_youtube.pdf
    • https://cdn-cms.f-static.net/uploads/4424025/normal_60242e834f261.pdf
    • https://cdn-cms.f-static.net/uploads/4369915/normal_600d94bb95dd8.pdf
    • https://cdn-cms.f-static.net/uploads/4366408/normal_60376844e97e7.pdf
    • https://cdn-cms.f-static.net/uploads/4417315/normal_600d56c80a64d.pdf
    • https://cdn.sqhk.co/pulununese/dxq8ijR/78232535249.pdf
    • https://cdn-cms.f-static.net/uploads/4418556/normal_60273ca09bc8d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/878fbdb3-0354-4062-ba74-75d2a23b8f1b/hp_elitebook_8560p_audio_drivers.pdf
    • https://s3.amazonaws.com/vukusa/acuerdos_de_paz_en_colombia_completo.pdf
    • https://uploads.strikinglycdn.com/files/57d2f18e-870b-48ec-bd2c-4e8752e2930a/romeo_and_juliet_1968_bed_scene_youtube.pdf
    • https://s3.amazonaws.com/rizezobabub/mods_for_minecraft_java_edition_1._14.pdf
    • https://uploads.strikinglycdn.com/files/d6185fb9-613b-4295-988a-55fb728cc1bc/nonosoja.pdf
    • https://uploads.strikinglycdn.com/files/4ac7f464-4328-4433-b1b2-635af6b397f1/how_to_use_vinyl_adhesive_sheets.pdf
    • https://s3.amazonaws.com/devuxuzejozam/movies_sites_top_5.pdf
    • https://s3.amazonaws.com/xelimewat/introduction_to_computer_science_books_free_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dccd.bin
ad27214f404c64a9e32f9527ce54d7ecaba9e1814e055c1fabf8c34b98469810
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCD 5316 bytes
font_01_sfnt_off0000eed7.bin
f08c356bd2861a6da863a138e2c747b6e19d43f083795baa46985da1ca4c5354
pdf-font-stream PDF embedded font (sfnt) at offset 0xEED7 11620 bytes