Malicious PDF — malware analysis report

Static analysis result for SHA-256 422c15e384867a8b…

MALICIOUS

PDF

88.7 KB Created: 2021-03-20 00:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c91c7639269537f7ab04eb8c9bbd453b SHA-1: 74d11b571ea82017c75156f47dc187d355d55d83 SHA-256: 422c15e384867a8b7556a2cde468b853807e27511c3249e27967c30ffce9a756
96 Risk Score

Malware Insights

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

The PDF document contains an external URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this PDF is designed to redirect users to malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=what+are+the+5+gifts+of+the+holy+spirit
    • https://vizodejow.weebly.com/uploads/1/3/4/3/134356937/94860a31d2296.pdf
    • http://xawegap.mywebcommunity.org/bifadimuwabunojax.pdf
    • http://salet.store/roman_numerals_2020_tattoo0bo2p.pdf
    • http://mukinokelek.mygamesonline.org/buwasa.pdf
    • http://lbaranaydin.com/wsop_2019_watch_online_free2jjno.pdf
    • http://setezafaxa.22web.org/what_does_republic_of_korea_mean.pdf
    • http://durowan.sportsontheweb.net/does_teeter_hang_up_work_for_sciatica.pdf
    • http://widonatozeg.mypressonline.com/kezudugatuzu.pdf
    • https://wiwitubiz.weebly.com/uploads/1/3/5/3/135351816/legedorisid-tomezaji-lafavisidunu.pdf
    • https://paweweribawu.weebly.com/uploads/1/3/4/6/134656346/sesuvotipekovelovis.pdf
    • http://pokafujadiso.iblogger.org/personal_exercise_plan_template.pdf
    • https://mapivabivex.weebly.com/uploads/1/3/0/7/130776319/rezazavu-wirezukuduva.pdf
    • http://summ-green.fun/nikon_prostaff_3_9x40hn42y.pdf
    • http://netlysy.online/kaxadetefodepowetafijuptmzfh.pdf
    • http://zunololanuxigu.sportsontheweb.net/sesivezulukizosadenezexo.pdf
    • http://duxaromovaxizom.iblogger.org/lajuzelofu.pdf
    • http://xulubapatoso.scienceontheweb.net/chick_fil_a_honey_roasted_bbq_sauce_nutrition.pdf
    • http://duvikerogene.iblogger.org/john_deere_gx335_deck_parts.pdf
    • https://fokifukamanur.weebly.com/uploads/1/3/0/8/130874497/kajalisejew.pdf
    • http://furniture21.online/livexifulunaliu1p1p.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fidegaf.atwebpages.com/othello_act_2_scene_1_questions_and_answers.pdf
    • http://gonegexunu.myartsonline.com/supervisor_interview_questions_and_answers.pdf
    • http://tuzuxutetug.atwebpages.com/physical_science_p1_november_2020_memo_grade_11.pdf
    • http://lekedoxe.rf.gd/foxemuru.pdf
    • http://lojawesepex.rf.gd/50816714390.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_off00011933.bin
f5fd348b0ac22b35b83d18d55bb2e1e60227c418792626deceec8cb731d43236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11933 5404 bytes
font_01_sfnt_off00012bab.bin
c0962a5ca61a2fca665183054165dd0364757475db77225777659451c0bae1b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAB 12420 bytes

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