Malicious PDF — malware analysis report

Static analysis result for SHA-256 67aa8d41e04dc1d7…

MALICIOUS

PDF

70.3 KB Created: 2021-03-04 23:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 93c08430a81ee4a47ff3c1c6037b2267 SHA-1: cfc2e47754d6d00c6565d6ff052a74ffd7efdad6 SHA-256: 67aa8d41e04dc1d7357a13510e400ede35abc039ca066d6a39f82fd0ea7e928b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=essex+school+bus+routes In PDF document text
    • http://verezitabel.66ghz.com/wigexebotovuworu.pdfIn PDF document text
    • http://vimosenap.iblogger.org/how_much_does_a_tesla_cost_in_nz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418755/normal_5fcde09297355.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/Qiekidi/61461507974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fd3b7a58810e.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/ejeihRM/gangstar_crime_city_game_download_size_128x160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454424/normal_60176f61dd357.pdfIn PDF document text
    • https://cdn.sqhk.co/xurajalijok/HhiXBVJ/widujikesuguxipudume.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/nhihejd/rush_roll_the_bones_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/losopodelim/yiazxLB/ark_survival_evolved_settings_guide_xbox_one.pdfIn PDF document text
    • http://malitaludim.iblogger.org/ramumowulema.pdfIn PDF document text
    • http://jokidinavefo.22web.org/welelibo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474223/normal_5fc8883c8f315.pdfIn PDF document text
    • http://kozizukexepuf.22web.org/2242316367.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ridupokibi.epizy.com/react_native_bundle_android_debug.pdfIn PDF document text
    • http://bimibukiju.rf.gd/chitralahari_telugu_movie_songs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/187e06e8-c56c-477b-ba97-8069c3daf69c/8345061542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7084b8a-a0bf-49f8-85cc-cc38c218d8ac/what_does_a_support_specialist_do.pdfIn PDF document text
    • http://sirirasefag.rf.gd/retesuzaxovatoj.pdfIn PDF document text
    • http://zuluduk.epizy.com/67724610624.pdfIn PDF document text
    • http://dekuravimej.epizy.com/83214512941.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://luredavum.epizy.com/7325132770.pdfIn PDF document text
    • http://posivunoloreweb.rf.gd/swimlane_flowchart_template_free.pdfIn PDF document text
    • http://bufirapopedodo.rf.gd/large_b_cell_lymphoma_treatment_guidelines.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_off0000d83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83F 4840 bytes
SHA-256: c4814dfc65aa2b9baf506fc7f8fbd5625fa007a4843ac4ec3e79106d0d18b9f7
font_01_sfnt_off0000e8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 10252 bytes
SHA-256: f021cba7077334823e6fa004a7cff9d870d51b1e19f28e7d913b45c6ec3b61c0

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