Malicious PDF — malware analysis report

Static analysis result for SHA-256 be05824c6cb1cbcc…

MALICIOUS

PDF

78.6 KB Created: 2021-03-12 19:56:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 676ff0ddaa5f733ef397d438b82ed56d SHA-1: b386ef9171eba0c940ae3b4e6eb192307c9bf731 SHA-256: be05824c6cb1cbcce90f8716ccaaf14d5a2c3a69ceff23e08d3d4e43c92f5c3c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • 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.
  • 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://yafferge.ru/award?keyword=alvaro+gomez+hurtado+la+revolucion+en+america+pdf In PDF document text
    • http://janorewaxeno.mygamesonline.org/lisojaxirimi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416326/normal_5ff9d63006a5e.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/the_standard_miami_beach_spa.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/how_to_be_a_team_leader_in_retail.pdfIn PDF document text
    • http://budivev.scienceontheweb.net/xodiderobepodij.pdfIn PDF document text
    • http://tewepeserero.22web.org/water_cycle_worksheet_grade_5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445555/normal_600d1279c1ade.pdfIn PDF document text
    • http://fesufobototezer.mywebcommunity.org/77108625721.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371265/normal_5fca85d928701.pdfIn PDF document text
    • http://nipijapogila.sportsontheweb.net/the_adventures_of_tintin_movie_script.pdfIn PDF document text
    • http://suberubepuparo.getenjoyment.net/46998052645.pdfIn PDF document text
    • http://mateguwokalidub.getenjoyment.net/adelaide_high_school_zone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495973/normal_5fc6494edd0e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_60124656b653e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/k_y_c_ka_full_form.pdfIn PDF document text
    • http://muvubavove.epizy.com/tesupipijawek.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/biblia_de_estudio_macarthur_descargar_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/edirol_orchestral_vst_free_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/balovuzorejow.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/ilsan_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/how_to_make_anyone_fall_in_love_with_you_review.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/angry_birds_movie_tamil_movie.pdfIn PDF document text
    • http://gumusijejokezit.epizy.com/41610039019.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_off0000f050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF050 5492 bytes
SHA-256: 95c3a60f4ab434a99c77b1359952df0f8de741b9530930ea28fe887d59425d48
font_01_sfnt_off000102ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EA 12688 bytes
SHA-256: 7676ea54496b5bf6365898690816ea218f4e1c141dc25ba2b78242d9c7a94550

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