Malicious PDF — malware analysis report

Static analysis result for SHA-256 60740b2293e5cbcd…

MALICIOUS

PDF

83.9 KB Created: 2021-04-22 09:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d130e1c618286abb2186d5094ca8b0f SHA-1: d141bcfb6f930d7b72f2c5472f4ad841732b275f SHA-256: 60740b2293e5cbcda57cd2f3ba5576d61b25ec43c2715129128f66486f179da0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to phish user credentials or deliver a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or credential harvesting attack.

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://zajinet.ru/strik?utm_term=microbiology+and+molecular+biology+reviews+submit
    • https://noperutepa.weebly.com/uploads/1/3/4/7/134721309/4c356563214882.pdf
    • https://nupuwuzom.weebly.com/uploads/1/3/1/4/131438231/lokejijimew.pdf
    • https://bojijoda.weebly.com/uploads/1/3/5/3/135325587/dafaxekigodu.pdf
    • https://mumizajasaliso.weebly.com/uploads/1/3/4/5/134598274/gujajuxonukamapizeke.pdf
    • https://biruwilajefi.weebly.com/uploads/1/3/4/6/134651793/ac38c820fd6.pdf
    • https://sinixamaruxibul.weebly.com/uploads/1/3/4/6/134653816/1912581.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://guguroguki.rf.gd/bsc_computer_capsule.pdf
    • https://uploads.strikinglycdn.com/files/20cc7392-04f2-4744-a32f-7dabe04de300/how_to_use_plural_verbs.pdf
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_e76c1419af6544cc844cf4d5ae320df2.pdf?index=true
    • https://s3.amazonaws.com/bisiku/nursing_dosage_calculation_practice_worksheets_nz.pdf
    • https://uploads.strikinglycdn.com/files/7215e35a-b859-4879-a1c0-724a7b11ac7c/81365687971.pdf
    • https://s3.amazonaws.com/gotenukevepunin/baadshaho_movie_ringtone_pagalworld.pdf
    • https://s3.amazonaws.com/vasofirida/creating_crystal_reports_in_c.pdf
    • https://cd489911-dc6d-4439-b408-84622343fb93.filesusr.com/ugd/d8e941_0f561c88bf4c40dfa7c3244a431b6bc4.pdf?index=true
    • http://numojas.epizy.com/runomo.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_off0000fcee.bin
31b91a5e334f2c4d4a725e03e5bd6e90e5b558ee4b19f182d599c78840c78846
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEE 5540 bytes
font_01_sfnt_off00010fbc.bin
544a00def8a4988112d43d6e92371725144d0e8ac454b96de7eaba75eb25211d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBC 10984 bytes
font_02_sfnt_off00013487.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x13487 4324 bytes