Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b96eee2625f4652…

MALICIOUS

PDF

72.2 KB Created: 2021-03-14 18:35:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 115392a2e75fed7a11ec1ba7830bbce5 SHA-1: 75754a5aec1b22514557b82f4133ec5491ac1094 SHA-256: 5b96eee2625f465277d958b4f97f867fabdf6f78fc37cba18da48da23329bc8d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The presence of an external URI pointing to a suspicious domain, combined with the document body containing what appears to be a song title and application metadata, suggests a lure for phishing or malware delivery. No scripts were extracted, but the PDF structure itself contains embedded URLs that are likely part of the attack chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/123?utm_term=bhanga+hrudaya+dj+raja+song
    • https://cdn.sqhk.co/rinilafexowi/UplV0Ky/96854314535.pdf
    • https://cdn.sqhk.co/jipuxoxukul/dLUheKs/rokafizojikukisolakurap.pdf
    • http://gumidaz.medianewsonline.com/501_analogies.pdf
    • http://zomuregunaradu.iblogger.org/comida_saludable_informacion_en_ingles.pdf
    • http://chambreop.xyz/54213084939t7vb2.pdf
    • http://armada.technology/current_instruction_register_examplenlmhz.pdf
    • http://rixujewo.getenjoyment.net/viduxifanejumek.pdf
    • http://blubadgehelp.net/86635674639noov6.pdf
    • http://ru-1.casa/fender_mustang_amp_v2_70_wattknbu1.pdf
    • https://cdn.sqhk.co/kowaziwaso/5jfSjgF/english_reading_comprehension_test_grade_12.pdf
    • http://itwow.info/gumonjcgs8.pdf
    • http://naturalm.space/high_school_student_resume_for_college_templateq7mhs.pdf
    • http://haifaiv.ru/matlab_programming_language_purpose5url8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rixuroruwe.myartsonline.com/nextbook_7_not_turning_on.pdf
    • http://sitotozip.rf.gd/60994846057.pdf
    • https://b01ec662-dec5-4f54-b977-8708717d6054.filesusr.com/ugd/07e02c_dbe87a2235e6434e9c3c2e5dc5d38c51.pdf?index=true
    • https://68f2566a-c586-4d15-a5d1-3a72044c38f3.filesusr.com/ugd/ecec20_046b13fb1ad04c4c8d985dd834905732.pdf?index=true
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_9e2a2b5c46644db39589fbf84334953b.pdf?index=true
    • http://sazibiwakefot.epizy.com/54547608711.pdf
    • http://zorufuzelal.rf.gd/dogozepakap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf47.bin
d0db9ca4ff379683ed5f5ee8a109be0e8c50c4a3951a94d51d12b7390a3158e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF47 4920 bytes
font_01_sfnt_off0000dfef.bin
a5173df9fd0934384dc48af480a435a93533ea241f57a3a66c3fef7abf4965e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEF 10744 bytes
font_02_sfnt_off0001042f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1042F 4324 bytes

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