Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f3c380d969965f2…

MALICIOUS

PDF

77.8 KB Created: 2021-03-06 08:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b3d1bdbd765e365722750a00a39f1841 SHA-1: 58d0f5b3488aa722b4d971caeeba6567883717d5 SHA-256: 1f3c380d969965f2e0e6fd361df3b8665316c2c11dc1eaafa879245127f80248
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF that has been flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of an embedded URL pointing to 'xajibur.ru' suggests a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xajibur.ru/123?utm_term=canon+powershot+sd1200+is+digital+elph+charger PDF link annotation
    • http://xobiriwifineve.22web.org/xewamun.pdfIn PDF document text
    • http://erogan-oficial.site/68013043478gv3gk.pdfIn PDF document text
    • http://powusonuruw.22web.org/pojefiganidukupi.pdfIn PDF document text
    • http://luferuvijudadof.22web.org/53169682604.pdfIn PDF document text
    • http://freshremont.com/7051983882060qsw.pdfIn PDF document text
    • http://bivodotofa.iblogger.org/city_car_racing_game_for_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://beverotunege.epizy.com/navigation_bar_pro_apkpure.pdfIn PDF document text
    • http://mezomiwewelebe.epizy.com/hallelujah_barbershop_quartet_sheet_music.pdfIn PDF document text
    • http://xafamikipu.epizy.com/zufipirugi.pdfIn PDF document text
    • http://mewatubaliz.epizy.com/eye_of_the_beholder_game_manual.pdfIn PDF document text
    • http://badavusepewojo.epizy.com/vapivuzogokofatodope.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/traditional_philippine_music_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/etiologi_avian_influenza.pdfIn PDF document text
    • http://terefikug.epizy.com/reference_cheat_sheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/79211900965.pdfIn PDF document text
    • http://gaxosinuda.rf.gd/dawosulorunuzite.pdfIn PDF document text
    • http://famefikapipu.epizy.com/26535636165.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/area_of_similar_figures_worksheet.pdfIn PDF document text
    • http://mulanofisaw.epizy.com/punctuation_exercises_year_6.pdfIn PDF document text
    • http://rikovaniroxatox.rf.gd/basanti_masoom_sharma_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/us_guided_iliopsoas_bursa_injection.pdfIn PDF document text
    • http://faruvesisok.rf.gd/48227846612.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED86 5660 bytes
SHA-256: d5f0357de07c77940e0fef880d6d1d428d3eef1383b1fe106e75d65261920b92
font_01_sfnt_off000100d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D8 11500 bytes
SHA-256: c594a8d5d559b0edc9963f0f22cb18569c185e421516773ed37a8fcbeedfcf66

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