Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d41bdbb0a3a72ff…

MALICIOUS

PDF

71.8 KB Created: 2021-03-15 09:28:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f696d50e50a654350b93c9e9d13bf67a SHA-1: 9e078489967d7feb49ed42a9f1bb91a450d4746a SHA-256: 9d41bdbb0a3a72ffc459af594f44dc1d829cb14f6226f6d050c43e4688b0720d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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://nipisod.ru/award?keyword=mapa+geologico+de+chile+pdf PDF link annotation
    • https://cdn.sqhk.co/fexefurif/gdUewUA/zopozuj.pdfIn PDF document text
    • https://siresikewutawin.weebly.com/uploads/1/3/0/7/130739490/9933395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413112/normal_600ae6f83c2d9.pdfIn PDF document text
    • http://fragcups.com/ritevoxubuwif9kcp2.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/jjzkjh3/mug_cake_recipes_gluten_free.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/xNgcgc1/68054768216.pdfIn PDF document text
    • https://wodarobasuk.weebly.com/uploads/1/3/5/3/135300597/nutopo-nogutefizuzon-muzowekajevovi-lirovarefifus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_604deb574c407.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370054/normal_5fca16ed05268.pdfIn PDF document text
    • https://jivezevovofefav.weebly.com/uploads/1/3/4/8/134896957/xemewi_viwida_xerasog.pdfIn PDF document text
    • https://batuginuvitewaw.weebly.com/uploads/1/3/4/0/134013132/mibukuxelate.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/Zhcgfjh/nail_art_designs_fall_colors.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/1jeNUjj/hope_for_paws_melody_and_macy_update.pdfIn PDF document text
    • http://stakingyfi.com/69821621077yivtn.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/vibasujefir/29644512181.pdfIn PDF document text
    • https://95a83a18-022f-4aa5-9dc2-588eac4c5c4a.filesusr.com/ugd/ccb6ab_1b98ad4577b443a68ddec60eb2f26d99.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/charlie_malayalam_movie_masswap.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/snow_white_with_the_red_hair_season_2_episode_2_english_dub_funimation.pdfIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_7b1cd3de85974a8f80e9783eb88f1f91.pdf?index=trueIn PDF document text
    • https://91506351-5699-48ce-85e7-8e7d071f4e87.filesusr.com/ugd/d775a9_b8687a8fade548628ec4cc2eba4d66d7.pdf?index=trueIn PDF document text
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_84f5092c598848b8be31758aecd9e16e.pdf?index=trueIn PDF document text
    • https://835a0401-7144-467e-aacc-710587930ffc.filesusr.com/ugd/432cba_4ed9307e66fc4bdcbcde5d9bedb0e01e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/siveno.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_off0000d89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89B 5148 bytes
SHA-256: fc6746e3b06d4f429d336e081c415496a26eba72ffe09ba5f2d69ee0a017b555
font_01_sfnt_off0000ea2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2D 12012 bytes
SHA-256: 3b04da056ea97fc5644de023a2c67ace29f616a6ba872563f2997addf7344f23

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