Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa5961fab25a0f0a…

MALICIOUS

PDF

99.2 KB Created: 2021-03-13 20:55:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e6265100410cd4ad213cedd2f76cf4c1 SHA-1: d1fb3701c9b400386e18e5d54a96d92577b54a2a SHA-256: fa5961fab25a0f0a8992a8be31fe660d490eaaf0d7e52b686d7a293dbd2446ad
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with several pointing to suspicious domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting a phishing or scam attempt. While no scripts were directly extracted, the presence of external URIs and the ML classifier's high confidence score strongly suggest malicious intent, likely to redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=ayushman+bharat+disease+list+pdf PDF link annotation
    • http://rozujed.sportsontheweb.net/discipline_equals_freedom_book_depository.pdfIn PDF document text
    • http://lalashoppen.online/fakunejelenabizazuzeziuupu.pdfIn PDF document text
    • http://kesilub.iblogger.org/58923141669.pdfIn PDF document text
    • http://braco.ru/traffic_signs_worksheetme6uf.pdfIn PDF document text
    • http://roman-holidays.shop/kiran_computer_awareness_bookhe8b0.pdfIn PDF document text
    • http://tetekegobuj.iblogger.org/eclipse_book_summary_chapter_by_chapter.pdfIn PDF document text
    • http://idealica-italiaofficial.site/xevoluposutafovapunuyve6d.pdfIn PDF document text
    • http://kigaruzolalo.mypressonline.com/25323112769.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5234fdd-b394-4af8-837e-94ff671aecd8/samsung_50_7_series_vs_8_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f958eca9-50ab-44d8-811f-e9b8e891abf8/hampton_bay_ceiling_fan_remote_reprogram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc439d16-7d4f-4454-bb06-b044b949beef/around_the_world_in_80_days_summary_in_hindi.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/57413766852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c7370e-b87e-4faf-96b5-f7b466c1045c/komodozekarom.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/que_significa_titulo_rebuilt_salvage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba963f12-7c95-4afa-a1c2-0986606c16b1/murach_sql_server_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5dba1a0-98c6-4a25-aac8-9d0cad74544c/what_is_the_difference_between_global_developmental_delay_and_intellectual_disability.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/826b27f7-22e3-45e6-874b-9470a837a0ce/buenos_dias_princesa_blue_jeans_sinopsis.pdfIn PDF document text
    • http://marakolin.epizy.com/88545566328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/389022e4-fa22-4f8e-a067-1aae94a78c57/farmall_h_parts_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d99896da-7a37-44cd-ad5d-b083b199f1ef/cuanto_pesa_un_metro_cuadrado_de_tela.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/31259911462.pdfIn PDF document text
    • http://rabuvof.rf.gd/39288809808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f61f7b-099a-4df0-904a-537a0a53f72c/sharp_comfort_touch_air_conditioner.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/wd_my_passport_wireless_pro_user_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117BA 5512 bytes
SHA-256: 96aff7667508b6535209041fab897a0c19162063a14304402269d5d31e105982
font_01_sfnt_off00012a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A4E 11316 bytes
SHA-256: feb83444f497fcdd9fcea75d1dad170301930c4064651e91f6d4236e39883928
font_02_sfnt_off0001511c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1511C 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off0001666d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1666D 6188 bytes
SHA-256: 4a6de903472567f36eba1ffcaa61d36657bab963151f1184183277f89490031d

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