Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea4d4ec7fa4af6c…

MALICIOUS

PDF

121.5 KB Created: 2021-02-27 18:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3ec2cce74080e509dca919df1857f493 SHA-1: 032179fe97a68ae48893296868e615121bc32384 SHA-256: 9ea4d4ec7fa4af6c8f3e789e1ce623905d517e2de96a40c56e9a940fcbdf2457
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL pointing to 'zajinet.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to 'real estate classes online texas'. No scripts were extracted, but the presence of an external URI and the overall malicious verdict strongly suggest 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://zajinet.ru/wb?keyword=real%20estate%20classes%20online%20texas PDF link annotation
    • http://nizavevorupuj.mywebcommunity.org/what_is_gothic_art_characteristics.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/surah_mulk_bangla_translation.pdfIn PDF document text
    • http://zugemenelil.medianewsonline.com/best_nora_roberts_books_series.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/heat_exchanger_types.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/sony_dav-tz140_remote_app.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/james_allen_books_amazon.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/30029779388.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sutexuvidag.myartsonline.com/is_eso_worth_it_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/36376744737.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/application_form_for_absa_personal_loan.pdfIn PDF document text
    • http://fojodopid.rf.gd/7760503676.pdfIn PDF document text
    • http://bekelogamaju.rf.gd/distinguish_between_bookkeeping_and_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/calligraphy_practice_sheets_for_ipad.pdfIn PDF document text
    • http://kimatun.epizy.com/lejatatufurenaf.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/17191304911.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/que_debo_hacer_si_un_familiar_tiene_covid_19.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/walking_dead_graphic_novel_193.pdfIn PDF document text
    • http://litorow.myartsonline.com/php_bangla_book_free_download.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/sunadosuropajofiselejemu.pdfIn PDF document text
    • http://vujulazi.epizy.com/94436749827.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19068 4560 bytes
SHA-256: fab6b3b11b86e5fddb4742cf53b6b66ba908e445bbad9441cf46dac81ac14e0c
font_01_sfnt_off00019ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FF0 12676 bytes
SHA-256: 2de80f7bdf2819198b99ec6a5301b5a08e0aa420922085574be631c1f7db0207
font_02_sfnt_off0001ca78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA78 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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