Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d086264cc89b9f2…

MALICIOUS

PDF

83.4 KB Created: 2021-03-25 00:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 040c10927fa89179ff26b096ce599589 SHA-1: e00c92f0197492e2d1fdd6a9845dad59d217343b SHA-256: 1d086264cc89b9f2a78b2360253c7b99096c41b4d9e523c9d043acfc6a5111a5
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely leveraging a PDF exploit to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://dugedepap.ru/award?keyword=new+cutting+edge+upper+intermediate+student+book+pdf PDF link annotation
    • https://cdn.sqhk.co/lusimalifa/90SLEgh/elite_mobile_pet_services.pdfIn PDF document text
    • http://health2health.online/how_to_start_electronic_shop_in_uganda7j2r4.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/carboxiterapia_dosis.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/gjjc6hb/6862895939.pdfIn PDF document text
    • http://losmopaka.site/50062492292csp72.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/MjjPdgg/dwts_2020_scores_week_3.pdfIn PDF document text
    • https://cdn.sqhk.co/putuziboki/igejijc/nasal_congestion_spray_for_toddlers.pdfIn PDF document text
    • http://sibuvre.com/summertime_saga_mod_apk_android_free_downloadzl6kr.pdfIn PDF document text
    • http://fumigatoff.online/duruzulemilexodoruzuxorebw5i4.pdfIn PDF document text
    • http://mopowataxix.medianewsonline.com/ejercicios_alcanos_ramificados.pdfIn PDF document text
    • http://fejiximodanu.mygamesonline.org/how_much_are_old_marvel_trading_cards_worth.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/twilight_book_series_amazon.pdfIn PDF document text
    • http://trixy-matrix.space/who_won_peoples_choice_awards_2018je0li.pdfIn PDF document text
    • http://arenaprobet.com/black_and_decker_handy_steamer_plus_food_steamer_and_rice_cooker44es5.pdfIn PDF document text
    • http://kogemotuju.getenjoyment.net/how_to_buy_distressed_mortgages.pdfIn PDF document text
    • http://prodive.su/how_to_use_layers_in_photoshop_elements_20190jsfx.pdfIn PDF document text
    • http://mexawolin.medianewsonline.com/rilafafip.pdfIn PDF document text
    • http://magic-world.site/beimaan_piya_gana_video_inganncl.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/gikojoval.pdfIn PDF document text
    • http://parralax.net/numerologa_tntrica_evolutivazkmpg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bafuwujix.atwebpages.com/definicion_estudio_de_mercado.pdfIn PDF document text
    • http://watusinujebisu.rf.gd/how_social_learning_theory_works.pdfIn PDF document text
    • http://kivunakoxowufaf.epizy.com/34794594549.pdfIn PDF document text
    • http://davofunup.onlinewebshop.net/kuwed.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/abdominal_exercises_free_download.pdfIn PDF document text
    • http://jevusox.epizy.com/partitura_bachianinha.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_off0000fb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB67 5708 bytes
SHA-256: 838b3a88188a1a67b9e2b4c83ee5198910904f8cc6524ce5a29227169bdaf6ea
font_01_sfnt_off00010ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED4 20252 bytes
SHA-256: de928e72f11187cb7e8e2370e1ea3397c06d6f121b2b80f17b2eb34279d8f124

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