Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01bef603143b342…

MALICIOUS

PDF

81.4 KB Created: 2021-03-02 09:32:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3527b3f6b9472309bd6e5f37fa11b4d0 SHA-1: dc1d027a2cf0b1774036e20cd165c5fe438dbd27 SHA-256: a01bef603143b3424b69936c1566c0f1ffbdb798f27b3bb481c1d79602d51330
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and one specific URL that mimics a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The PDF structure and embedded links suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/award?keyword=how+many+quarts+is+a+power+pressure+cooker+xl PDF link annotation
    • http://reactivascotia2020.com/how_much_is_lauren_hashian_worthtuz8k.pdfIn PDF document text
    • http://bbflowers.net/wimetiwufexilorizixeneuw3ro.pdfIn PDF document text
    • http://agent-spv.space/bodyboss_nutritiontyhe6.pdfIn PDF document text
    • http://organicsss.space/fugaduclo5g.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/49801819943.pdfIn PDF document text
    • http://douchehub.xyz/axl_full_movie_in_tamilrockersu28eq.pdfIn PDF document text
    • http://theraisins.pro/asp.net_core_mvc_error_page770eq.pdfIn PDF document text
    • http://allrecipes.pro/o_que__uma_reviso_bibliogrficawh3io.pdfIn PDF document text
    • http://ru-dev.xyz/zesisuwevevanomuwu3kqd.pdfIn PDF document text
    • http://hookup157.site/tosozepiravepeniposzh.pdfIn PDF document text
    • http://sodalabs.club/guboxelefatunuda6khs1.pdfIn PDF document text
    • http://instapriz365.online/wixakapejatekagasetuo64k9.pdfIn PDF document text
    • http://bluhgang.best/wifi_smart_camera_v380_price_in_pakistan1pxk1.pdfIn PDF document text
    • http://8bitbeardsco.com/drown_by_junot_diaz_essayq9cdk.pdfIn PDF document text
    • http://fesofiwig.22web.org/carel_ir33_setup.pdfIn PDF document text
    • http://lupelisizi.medianewsonline.com/how_much_does_chick_fil_a_owners_make.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pevipitoz.atwebpages.com/tawegovidoditodo.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/clear_sky_chart_android_app.pdfIn PDF document text
    • http://jaxunukologefis.onlinewebshop.net/how_to_reset_advantium_microwave.pdfIn PDF document text
    • http://kimoviranonaf.onlinewebshop.net/visenapu.pdfIn PDF document text
    • http://bozisiruvaletun.rf.gd/sibiwimapelinemesijodi.pdfIn PDF document text
    • http://gejiregi.rf.gd/bixilozivotesuvelen.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_off000100b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B6 5492 bytes
SHA-256: af3e33911e1273aeb94675bd9f7a1852dd6ca04449cdd785daa92b4c38a2d1e0
font_01_sfnt_off0001136a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1136A 10480 bytes
SHA-256: 66eb50b65518b357a636a3d220cf3250973fd072fab87f2b28c41d0c792c5ebd

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