Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ecafe303bd411f…

MALICIOUS

PDF

76.9 KB Created: 2021-03-07 21:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 803fb9048bd9fecda368d6a8f6e6e678 SHA-1: 5503769ab28d0d93a6987b401724655c64390dd1 SHA-256: 79ecafe303bd411f7540ec9e9591a914034cf5101960fe9cc474562fa59b4565
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://kuzutuzo.ru/aws?utm_term=how+to+make+organic+poultry+feed PDF link annotation
    • http://stroiline74.ru/sifopawiwabokirfe698.pdfIn PDF document text
    • https://cdn.sqhk.co/rarukaboz/ifihiby/99785672232.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuburi/aXavzdZ/19994882570.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/physics_project_topics_high_school.pdfIn PDF document text
    • http://custits.space/bangla_song_pagalworldy4wco.pdfIn PDF document text
    • http://witekevotofuz.22web.org/i_am_that_girl_boston_college.pdfIn PDF document text
    • http://glasshookahcatering.com/what_is_the_choke_on_a_snowblowerdiua5.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/9imzaoW/nabeliliwolakumazuvikugi.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/bPgckay/57261033776.pdfIn PDF document text
    • http://straponartist.com/mother_courage_bertolt_brechtedept.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/sujijalovugowuxapijuroxi.pdfIn PDF document text
    • http://raisinshub.club/elbow_bursitis_exercises3rtvb.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/gjhieij/tiktok_download_pc_play_store.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://janevaxibeju.rf.gd/fundamentals_of_power_electronics_mcq.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/fundamentals_of_pathology_by_husain_a_sattar_pathoma_2017_paperback__videos.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/synthesis_essay_example.pdfIn PDF document text
    • http://fogevodazeta.epizy.com/54073226059.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/jutowiwifapekanomapo.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/termination_of_employment_letter_template_acas.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/hospital_acquired_pneumonia_guidelines_antibiotics.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_off0000efca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCA 5516 bytes
SHA-256: ee04d3ba3c63e9b32787eca5c106680d56433cf59f363779b4305c33f8720373
font_01_sfnt_off00010290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10290 10384 bytes
SHA-256: f92dd7e496990d0c2e1a6482e3e03f768d2c2afae8e63497dbb8d0ae4848b909

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