Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee32fbe65a1d397…

MALICIOUS

PDF

79.2 KB Created: 2021-02-15 16:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a7ff6fe43a5255d772d3734d5a801404 SHA-1: e809a03e41212a63fc3a4b17a887c5e9e0551f80 SHA-256: 8ee32fbe65a1d3970b23c6f347fa26d3729b25ea93659b92d7877e3338d08893
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm, indicating a likely attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, with the document likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, but the overall structure and heuristic firings point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=que+es+la+capital+de+francia PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376087/normal_5fccfb253e317.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408170/normal_5ff0a04fc36d9.pdfIn PDF document text
    • http://arendagg.xyz/utility_support_gigabytel1hz7.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/gjfifVO/valvoline_vr1_racing_motor_oil_vv205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_601e250b84309.pdfIn PDF document text
    • https://cdn.sqhk.co/pexudolifa/sYia3ji/xonizaku.pdfIn PDF document text
    • http://zevixoleg.iblogger.org/ambirad_radiant_tube_heaters_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/bZjbC1D/grand_prix_story_2_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/ihlie16/live_channels_app_for_android_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/webepinovet/QhaQwid/football_academy_coaching_sessions.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/vmware_tools_freeiph3m.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/giUhhit/datiwetuwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485436/normal_6001db5488f93.pdfIn PDF document text
    • http://creampiepow.club/accident_reports_today_erie_pa3ux8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuvuwuk.rf.gd/ruratirud.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/xuvakiliwaz.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/ayesem_koti_lyrics.pdfIn PDF document text
    • http://jojemoditupu.rf.gd/annales_maths_premiere_s.pdfIn PDF document text
    • http://tuxefefili.epizy.com/dafiwigevuwerodidobesu.pdfIn PDF document text
    • http://rorujuzolu.epizy.com/library_volunteer_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/caregiver_authorization_form_california.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_off0000eb89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB89 5212 bytes
SHA-256: ebeff62e0103cb8101551f57eb9374617ae9ab509d9cb310d7725ad22e0d4bbf
font_01_sfnt_off0000fd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 15812 bytes
SHA-256: 5321204e4c3a85c93ee0bc3cd894bc1a694642a963c1a0411d68d4d788e88b31

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