Malicious PDF — malware analysis report

Static analysis result for SHA-256 4166721819d7ef11…

MALICIOUS

PDF

71.0 KB Created: 2021-03-02 12:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e59816aa5bb5cba059ccf291cbe583f0 SHA-1: 05a5bec41f2b587dd3b4da68c8b30bd2421e14d4 SHA-256: 4166721819d7ef11d711bd8d1ace5d52e3f040192a56b5b120fa9f04f7e3138b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=the+sims+mobile+cheats+for+android PDF link annotation
    • https://jedidaril.weebly.com/uploads/1/3/4/6/134687024/7294030.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/personajes_griegos_y_troyanos_de_la_iliada_y_dioses.pdfIn PDF document text
    • https://cdn.sqhk.co/rubupidorinu/4jbvgh9/warlord_definition_in_your_own_words.pdfIn PDF document text
    • https://xadifera.weebly.com/uploads/1/3/1/4/131438156/fodos_jopegafot_bijusulikobilu.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/16701746659.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/the_business_writers_companion_7th_edition_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/2WzLkAK/97343366251.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/DjgViik/45933491777.pdfIn PDF document text
    • https://cdn.sqhk.co/korebuxaguz/he555ZF/spam_call_detector_app_iphone.pdfIn PDF document text
    • https://fawirato.weebly.com/uploads/1/3/5/3/135392883/vajoro.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/how_long_should_a_home_water_softener_last.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/jBuSErq/telegram_app_download_apk_free_download_jio_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_602971ceaf7ec.pdfIn PDF document text
    • http://tideparipawovu.mygamesonline.org/how_to_get_a_helicopter_in_gta_5_cheat_ps4.pdfIn PDF document text
    • https://mazazujusuvazix.weebly.com/uploads/1/3/1/8/131856432/3257574.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/how_to_test_sexuality.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/vazisi/full_zondervan_bible_dictionary_online.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/what_is_the_pizza_sauce_made_of.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/dell_optiplex_3010_sff_desktop_specs.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_off0000da10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA10 5352 bytes
SHA-256: a6f09ce9d7700334a3daea75734a931cd4398c9699c0ea38c412bbf9c91d305e
font_01_sfnt_off0000ec0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0F 10208 bytes
SHA-256: 518a630a208d7ef09d726c817c249098b2f20541dfab3a803fb2d697e28fbb22

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