Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd3da6e35ec661d…

MALICIOUS

PDF

74.1 KB Created: 2021-04-05 07:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cd18022a9bc50c33b404bd3b724658dc SHA-1: 2249de3a7b00e83d62ebfb98043b4c8be6914a78 SHA-256: 2dd3da6e35ec661d56c14bacc3a789d3673d839ac2ae0d490a1907522a79d41c
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document body, though heavily obfuscated, contains a deceptive title related to Greek plays, likely intended to trick users into clicking embedded links. The numerous extracted URLs, many hosted on disposable domains, suggest a link farm or phishing campaign designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/aws?utm_term=what+are+the+three+types+of+greek+plays PDF link annotation
    • https://cdn.sqhk.co/ledodatefu/jj0Fwgi/86664808496.pdfIn PDF document text
    • https://vegilumos.weebly.com/uploads/1/3/1/3/131383621/xuzasazolejabo.pdfIn PDF document text
    • http://xeberul.mywebcommunity.org/pokiwinukojanevute.pdfIn PDF document text
    • https://pamuguvijokogag.weebly.com/uploads/1/3/4/8/134883264/polebekazeg.pdfIn PDF document text
    • http://saduzemed.mypressonline.com/black_forest_recipe.pdfIn PDF document text
    • http://pemizirevubel.mywebcommunity.org/bissell_vacuum_cleaner_reviews.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/coronary_artery_anatomy_and_physiology.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/best_stock_for_2020_reddit.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/91403184123.pdfIn PDF document text
    • https://beperupofifu.weebly.com/uploads/1/3/1/6/131636755/xobum-moratejusuwunut-vumeba.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/fjihdKX/granny_mod_apk_hack_outwitt.pdfIn PDF document text
    • https://gosidobesek.weebly.com/uploads/1/3/4/0/134017516/zefubod_jawubodi_tavifuxura_jejox.pdfIn PDF document text
    • https://sigegasolo.weebly.com/uploads/1/3/4/7/134732441/tatixolibe.pdfIn PDF document text
    • http://nubatevujonuw.mygamesonline.org/agility_workouts.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/nezanurugega/ministry_of_sound_clubbers_guide_2010_tracklist.pdfIn PDF document text
    • http://bitenozof.atwebpages.com/socio_economic_and_caste_census_2020_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/2021173122.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/nojitawunis.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/75523455442.pdfIn PDF document text
    • http://lipabarud.atwebpages.com/lista_de_adverbios_de_modo_en_ingles_y_espaol.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_off0000e264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 5344 bytes
SHA-256: 35e66af75f9528f6366642c588bfe9c3a6d87fd987f60888e095e385518efd47
font_01_sfnt_off0000f4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A5 10844 bytes
SHA-256: d3c12fcdbcb494b6a672a3c24439484f4bd6018b9a5af5a9a42f8ce46f4d3511

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