Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb4da7c9cef99c9…

MALICIOUS

PDF

80.9 KB Created: 2021-03-20 08:10:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 40a3a896505e9ee7ec5b5de08767701e SHA-1: 8f9f6e2bd34d064e28ddcefbae5c17f1653420f3 SHA-256: 8eb4da7c9cef99c9627ab08ae69333a5c8955a8a55d8369e2e96aa3b68ae7304
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm. The primary URL, 'https://ponafet.ru/strik?utm_term=12+days+of+christmas+lyrics+tagalog+team+yey', appears to be a lure, possibly related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=12+days+of+christmas+lyrics+tagalog+team+yey PDF link annotation
    • https://cdn.sqhk.co/sewenajete/gjGfjb4/fruit_master_apk_uptodown.pdfIn PDF document text
    • https://zofifonanofanap.weebly.com/uploads/1/3/4/8/134876640/zilimivibegetaw.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/KNgchi3/81341805975.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/jeifige/tropico_4_modern_times_campaign.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/eS2MTYu/68030550843.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/736717.pdfIn PDF document text
    • https://razamilijukiw.weebly.com/uploads/1/3/4/8/134879964/govaxezamevasot_lekam_vezad_finajuvavasone.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/ji33Njj/39446198049.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/aggTidG/piwoledepowija.pdfIn PDF document text
    • https://cdn.sqhk.co/masunidupag/pjbjeie/hkust_online_class.pdfIn PDF document text
    • https://cdn.sqhk.co/mepapogivoma/dZHcLaM/online_dj_mixer_sound_effects.pdfIn PDF document text
    • https://cdn.sqhk.co/salejejo/fctighj/citra_3ds_emulator_for_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/ribobujir/ja3dx2q/kids_doodle_color_draw_free_game.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/glkiijh/37947139217.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
    • https://a1bd7baf-2de3-4c81-8914-4b74a732ecf9.filesusr.com/ugd/c89f15_8a05c10f7cfe43dcac015202a0a2d4cb.pdf?index=trueIn PDF document text
    • http://pukekutobupiv.rf.gd/zoloponebige.pdfIn PDF document text
    • http://wewapozolebupo.epizy.com/isopropyl_alcohol_ipa_safety_data_sheet.pdfIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_eb73d720e2454eaca9366f80a752164b.pdf?index=trueIn PDF document text
    • http://wezekopufoj.rf.gd/difference_between_first_and_third_angle_projection.pdfIn PDF document text
    • https://a4edf7fa-b057-49b5-8014-e5fd436fbef3.filesusr.com/ugd/c8b2c5_24f545a85cf74e02989143c06ace7617.pdf?index=trueIn PDF document text
    • http://fosisidevafepet.epizy.com/daxipiretowifaxowemagol.pdfIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_07e6518f00744563b54e9dea88b6e1a7.pdf?index=trueIn PDF document text
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_5304b8c824bb4e1bbaae49e2d122e4be.pdf?index=trueIn 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_off0000eea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA2 5308 bytes
SHA-256: f42227fdd00eb2319aa40a87036a19715734e03b168f9b8872c95bfa1467b82e
font_01_sfnt_off000100b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B0 11508 bytes
SHA-256: e3e447d794ce6864ecd1fff9e0b02c9fcba8e02ff7ba12156243916a182cf582
font_02_sfnt_off000127d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127D6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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