Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea155a8e4934afd4…

MALICIOUS

PDF

148.5 KB Created: 2021-03-17 04:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f91c89876b591a8ead097f3e3be044cf SHA-1: 83b9b703b4894575bb9b2ee5cd81acb31f3e2aab SHA-256: ea155a8e4934afd44e976fbf4694133a45fc181267c77a6f498170ce811e123e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as information about a game release date, likely a phishing lure. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of external URIs suggests an attempt to redirect the user to a malicious site. No scripts were extracted, but the overall structure and URL indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=tou+tower+of+nero+release+date PDF link annotation
    • http://nitesufi.sportsontheweb.net/85721377213.pdfIn PDF document text
    • http://tozofuji.scienceontheweb.net/76913381008.pdfIn PDF document text
    • http://levojefozaloro.mywebcommunity.org/livumokujaradimuwomonod.pdfIn PDF document text
    • http://mapizemi.22web.org/bp_chart_age_wise.pdfIn PDF document text
    • http://wotaxatumumodok.sportsontheweb.net/what_happens_in_the_last_book_allegiant.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/kawesa.pdfIn PDF document text
    • http://godumos.22web.org/51998680598.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/city_of_fallen_angels_audiobook_vk.pdfIn PDF document text
    • http://nuzadovokebin.iblogger.org/bansal_classes_study_material_class_11.pdfIn PDF document text
    • http://muwiduvepobuz.mygamesonline.org/11239346124.pdfIn PDF document text
    • http://zodelem.mygamesonline.org/how_to_open_lexus_es_350_trunk_with_key.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sojufuka.atwebpages.com/sarah_dessen_the_truth_about_forever_age_rating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe4ee57-c219-4983-b560-3daf5e654d73/is_michael_hardy_married.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/zuguveberibefum.pdfIn PDF document text
    • http://nerezusilanake.atwebpages.com/mibozixipixikesokebaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eecae9d8-6a5b-441e-8f5a-80aa4da9095e/waxunuvubuwuvikekitekofar.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/elegant_business_powerpoint_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6681d42c-f19d-40d1-9ca9-e4f4b4b3b48e/the_endless_trench_netflix_usa.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/samujowoladedejowidurum.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/giremafekevotafodobezode.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/mitosis_vs_meiosis_worksheet_17.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/cat_room_mod_apk_revdl.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_off000208bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x208BC 4940 bytes
SHA-256: f3bb48558e101cd398f89e6644b8c77231c3f768c8738a4bf2d5f45ae49c3613
font_01_sfnt_off000219a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x219A4 11932 bytes
SHA-256: 814ef4a870f7c9050bd4d1fe3a618a6d5d1882ecc1c7183955a3f5d8a587f260

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