Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed89ec21454a038…

MALICIOUS

PDF

69.2 KB Created: 2021-03-02 02:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73567de10cb07cde25ce3d4b39eb4ad4 SHA-1: 7d4ee574eb9a504ccb001352a9050ab69abedd82 SHA-256: 4ed89ec21454a038b7a6ef39e1a975f5556015b56982c497e0f0b7c4ce92c770
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, aligning with spearphishing tactics.

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://dafemum.ru/123?utm_term=toro+power+clear+721+qze+won%2527t+start
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5fe99d38ceab2.pdf
    • https://cdn-cms.f-static.net/uploads/4412606/normal_602b4963df5fc.pdf
    • https://cdn-cms.f-static.net/uploads/4386836/normal_60216fa20751b.pdf
    • https://cdn-cms.f-static.net/uploads/4481834/normal_602ae139397c6.pdf
    • http://wexoxunesixu.iblogger.org/buku_medan_magnet.pdf
    • http://wedipum.mygamesonline.org/zevegurav.pdf
    • https://cdn-cms.f-static.net/uploads/4450635/normal_6029b38c53fd8.pdf
    • http://puzexijabin.mypressonline.com/cursos_de_idiomas_online_gratis_con_certificado_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4485799/normal_60322dac0928c.pdf
    • https://cdn-cms.f-static.net/uploads/4486033/normal_600bbb0c600e4.pdf
    • https://cdn-cms.f-static.net/uploads/4446395/normal_6015c0418eeaf.pdf
    • https://cdn-cms.f-static.net/uploads/4377938/normal_601888c002fb0.pdf
    • https://static.s123-cdn-static.com/uploads/4495042/normal_5fc92508b519c.pdf
    • http://bovewitavivebu.getenjoyment.net/romeo_and_juliet_notes_for_students.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://namakanexir.atwebpages.com/bajomilunoxa.pdf
    • http://fobunedofakane.rf.gd/best_abstract_wallpaper_hd.pdf
    • http://vanudedu.epizy.com/58647201312.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_off0000d1c8.bin
aa9738536d2ac63b0cd2a5922dd3b13915b67b32c9e0843719e76ef49a907915		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C8 5440 bytes
font_01_sfnt_off0000e48e.bin
b39e897d206dcd3b23dde35fc9299c848c4c43ef3b130a57fec70468e7aeff2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE48E 10088 bytes

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