Malicious PDF — malware analysis report

Static analysis result for SHA-256 34470dd477a817d4…

MALICIOUS

PDF

79.1 KB Created: 2021-02-23 18:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877eeeea176de64b92985f50c4fc5de1 SHA-1: 2be39c2d180357c1439a9a8800353e24de245a43 SHA-256: 34470dd477a817d4f08eeb84897e6d6e35d31ceadb963f343ed306528a6e4c3b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to the download or execution of a malicious payload. The document body, though heavily obfuscated, appears to be a lure related to academic material.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=organic+chemistry+brown+8th+edition
    • http://chunyoo.com/86617102997ztyvl.pdf
    • http://7gusevshop.website/kedenojegivoxijipopojetid56gjg.pdf
    • https://cdn-cms.f-static.net/uploads/4446158/normal_602e20cf21e6e.pdf
    • https://cdn.sqhk.co/pebekaja/gjPShe3/580343572.pdf
    • https://cdn.sqhk.co/rokabumake/lxxifjd/11610428435.pdf
    • http://jakor.pro/manualidades_para_nios_palitos_de_helado8ozea.pdf
    • https://cdn-cms.f-static.net/uploads/4494166/normal_60195f01eeae6.pdf
    • https://cdn.sqhk.co/joxezexukub/hhicVhj/91318272077.pdf
    • https://cdn.sqhk.co/zesonixiv/idhjxEQ/college_hoops_coach_with_876_victories.pdf
    • https://cdn.sqhk.co/feripamapuv/wjfheie/mobutaporofipujomu.pdf
    • https://cdn.sqhk.co/vabalogu/0q8gfif/39305839917.pdf
    • https://cdn.sqhk.co/gunakawujo/T0sggZt/74141882496.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mojajigutomikew.rf.gd/what_is_the_conflict_in_call_of_the_wild.pdf
    • https://s3.amazonaws.com/xafaxotaful/ankhiyon_se_goli_maare_song_pagalworld._io.pdf
    • http://vavijirodujozi.rf.gd/61211299476.pdf
    • https://s3.amazonaws.com/nokiva/24196162328.pdf
    • http://vogizopenukese.epizy.com/wananijurelotaxetepona.pdf
    • http://pevoxetawalob.rf.gd/33088638673.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_off0000f432.bin
ca06a46f7bb936d604299a15947e7431eedfad495d2d03c046f3245c88e0fc60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF432 5876 bytes
font_01_sfnt_off00010812.bin
94eee0fd855724195b30605d3098cdd27260bcc17729993b45ca5c8efbea6c5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10812 11484 bytes

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