Malicious PDF — malware analysis report

Static analysis result for SHA-256 0829cae7a18020b3…

MALICIOUS

PDF

75.3 KB Created: 2021-02-23 02:18:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f1309d6aa41070283edd48b1eb339094 SHA-1: da5531c4329cc5f1e5fc8f6015643c8902084d58 SHA-256: 0829cae7a18020b3326f449d6baadb9e8962341fa9c05ac4768c4d48d68e68ef
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to 'bologen.ru' with a query parameter suggesting a lure related to Facebook account deletion. While no scripts were extracted, the presence of an external URI and the phishing-related URL strongly indicate a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/strik?utm_term=facebook.com%252Fhelp%252Fdelete+my+account PDF link annotation
    • http://reduslim-italiaufficiale.site/anne_klein_sport_nolita_flatform_sandalsj0wx8.pdfIn PDF document text
    • https://cdn.sqhk.co/pagifizipafo/hhU6Shb/application_to_get_followers_on_instagram_for_free.pdfIn PDF document text
    • http://bioforcecolumbia.site/5_steps_to_a_54pup9.pdfIn PDF document text
    • http://danuseko.iblogger.org/januxexi.pdfIn PDF document text
    • http://pomirkapa.site/9-_4_compositions_of_transformations_worksheet_answers1jddh.pdfIn PDF document text
    • https://cdn.sqhk.co/jozojijejip/RjjZhuS/tagisisasipuzuxago.pdfIn PDF document text
    • http://lazerepil.site/kosunurajufijikugajomilohek7s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tononade.rf.gd/learn_korean_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/pokenisetomekojavusopire.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/mp_board_duplicate_marksheet_challan.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/gosugawoxavoz.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/fillable_form_in_word_2016_template.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/emulator_for_macbook_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/dalolizofopugolato.pdfIn PDF document text
    • http://siwojanapav.epizy.com/poxasajulusukonixasutur.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/87530037712.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/92480375444.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/kiwulovimatibonolubuten.pdfIn PDF document text
    • http://kugofabafomozo.epizy.com/contrato_de_arrendamiento_de_vivienda_descargar_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/granulomatous_inflammation_pathology.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_off0000e9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CB 5368 bytes
SHA-256: a475d910991a07924b5db9bc5583ec421e606821eb419cfee38efe6975edbcc4
font_01_sfnt_off0000fbff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFF 10508 bytes
SHA-256: 565abaa9dc788746e9b97bfb44f5816e04c5568fa078ba5ed259eb2797e0326e

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