Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe7ac2a0edfcd75…

MALICIOUS

PDF

83.6 KB Created: 2021-05-09 02:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b560e567c940bee0e19a952938dac313 SHA-1: 1f631cbfc673b9745f04f1e654814bd40a2e1887 SHA-256: 9fe7ac2a0edfcd7550f09b5a6664fe32d91efa7aaa8134055a1f49901181cf49
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dugedepap.ru/strik?utm_term=2020+ford+mustang+ecoboost+premium+convertible+0-60 PDF link annotation
    • http://lajulufubugo.22web.org/13704603172.pdfIn PDF document text
    • http://podcard2020.site/77297244882gyvnf.pdfIn PDF document text
    • http://bigmagazin.xyz/ozymandias_poem_summary_questions_and_answersj3hk7.pdfIn PDF document text
    • http://3bki.ru/8289247392925bnr.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/anomalias_de_las_uas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_60633e9a9948e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486537/normal_5fd31a19600a0.pdfIn PDF document text
    • http://kinoxca.xyz/nekowogajarerepunaxonim6nmgn.pdfIn PDF document text
    • http://janipuwibir.mywebcommunity.org/information_systems_literacy_definition.pdfIn PDF document text
    • http://osummer.space/hoover_uh70120_hepa_filterzmoa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_6044f4ab15710.pdfIn PDF document text
    • http://metazoaapc.fun/52619531015l5hgw.pdfIn PDF document text
    • http://lovechat24.club/55920378855wez85.pdfIn PDF document text
    • http://koreanluxe.com/mefijegawobabbwxan.pdfIn PDF document text
    • http://alkim.xyz/sony_bdv_e2100_price2gah8.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://fijorolur.myartsonline.com/xipukijakunekefiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2352b45-e519-43f6-8e51-59a6e2dd140f/agatha_christie_biography_video.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/how_to_use_craftsman_82344_autoranging_multimeter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75e75684-9834-4883-93d9-704fdf79369b/41353741022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd682e1d-8080-40fe-a195-2ff2c1caad6f/tepivajifozagoremepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72d34b0-c950-4c56-914e-33d8c1cd145a/calorie_count_arbys_beef_slider.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d00a8dc-3d64-435b-ba40-10cfd1700903/xaxaja.pdfIn PDF document text
    • http://jikolelekad.epizy.com/how_to_use_candlestick_patterns_for_day_trading.pdfIn PDF document text
    • http://kikanelomer.onlinewebshop.net/wixomedak.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_off0000f7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FF 5924 bytes
SHA-256: 931f5799f3577b3ef837e86886e34a5322c21f83db1b46eecc7f7b92e738b5ba
font_01_sfnt_off00010c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C03 11272 bytes
SHA-256: 41aa18c9b2a398960a2dd48cc8c8a98c91c08933da34f9f976cfa98a31b4bae0
font_02_sfnt_off00013231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13231 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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