Malicious PDF — malware analysis report

Static analysis result for SHA-256 e884d48d4fa8d383…

MALICIOUS

PDF

93.4 KB Created: 2021-02-26 17:24:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3f7a4003c664ba39e780ab6e203b07f9 SHA-1: eac081319fa5d4d0ebbbc00fb9577409d3aee085 SHA-256: e884d48d4fa8d3836a7229010672b61e3c06450c66d20dfa317390ff28073c97
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 leads to a domain known for hosting malicious content. The document body, though heavily obfuscated, appears to contain keywords related to the lure, suggesting a phishing attempt.

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://ponafet.ru/123?utm_term=how+much+does+a+barista+make+in+new+york PDF link annotation
    • http://powajaxib.medianewsonline.com/multiple_intelligences_gardner_book.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/cygolite_hotshot_pro_150_usb_rechargeable_tail_lights.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/critical_analysis_of_the_lottery_by_shirley_jackson.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/duzixabaxalamifemexobenof.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/how_to_pair_photive_bluetooth_headphones.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/what_is_analysis_and_design_in_civil_engineering.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/640962707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://penevebepor.epizy.com/12973241206.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/cognitive_behaviour_therapy_for_ocd.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/siponeximovubosiparu.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/58218861636.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/32078148185.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/game_one_piece_bounty_rush_android.pdfIn PDF document text
    • http://manosotidokef.myartsonline.com/garmin_gps_76_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/jewexowilodoxufif.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/google_sites_template_gallery.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/arkansas_bill_of_sale_for_car.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/anemia_chronic_disease_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/14690591960.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_off00012ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC5 5504 bytes
SHA-256: afa6b3e9c4d991da6d6caa7b86d41ed9b07da960dcd59188fdc01ab69aee9f45
font_01_sfnt_off00014161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14161 10800 bytes
SHA-256: 2bdcf49ec755e2cbdffb158a2021434b0b75dbfa13436c65e568185e88777a12

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