Malicious PDF — malware analysis report

Static analysis result for SHA-256 4017f4edce41b2c4…

MALICIOUS

PDF

71.3 KB Created: 2021-03-09 21:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 46596861fea93023c05d26b664d53248 SHA-1: b02b9bfbb9398fdeaa5f3f329520ee93542b5ae8 SHA-256: 4017f4edce41b2c42ead03ab3f36a879c2863814047028ecc1886033b104dbac
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=network+diagram+pdf PDF link annotation
    • http://sufawevugut.mywebcommunity.org/physical_science_textbook_grade_10.pdfIn PDF document text
    • http://alcexpress3.xyz/7045194568rsxxt.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/81365637323.pdfIn PDF document text
    • http://trackcreditscore.info/bonafukupizajetifokonuxpgxgr.pdfIn PDF document text
    • https://pefisidedufe.weebly.com/uploads/1/3/4/9/134902532/1837758.pdfIn PDF document text
    • http://ruvikuvi.mywebcommunity.org/les_vangiles_apocryphes.pdfIn PDF document text
    • https://devojakosumu.weebly.com/uploads/1/3/5/3/135314674/59cb9e.pdfIn PDF document text
    • http://sun-italy.space/blade_golf_irons_siteubqv3.pdfIn PDF document text
    • https://libizegenumejav.weebly.com/uploads/1/3/0/7/130775388/500196.pdfIn PDF document text
    • http://vitrinachel.ru/utorrent_free_movies_bollywoodthkau.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/3Ziefhh/mofixakelabami.pdfIn PDF document text
    • https://cdn.sqhk.co/legusovej/5gfgjia/carrot_cake_recipe_youtube_video.pdfIn PDF document text
    • http://dostafood.xyz/webojajv10gi.pdfIn PDF document text
    • http://gufurebu.medianewsonline.com/how_to_sketch_a_graph_of_a_function.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0b7b936c-93ac-4a60-9644-6ba220b934cc.filesusr.com/ugd/b4bf80_27f390b4d61642d4a98f839a7dd8b224.pdf?index=trueIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_c9d1775d4f9144c2b7ac1a973739cdda.pdf?index=trueIn PDF document text
    • http://rizivubonulej.atwebpages.com/jiwamedomuwaxikuxevusox.pdfIn PDF document text
    • https://79d86aa2-23c4-4aa0-a0dc-c16ac59ae55d.filesusr.com/ugd/ecb701_03070f105c2f438e931f312f7e9342cb.pdf?index=trueIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_75e944c3f84c4a028054156b970394c1.pdf?index=trueIn PDF document text
    • https://d78d2789-9aef-4bfd-88be-9093bec910ef.filesusr.com/ugd/87a178_88547aa727814a39b427bb472ec6e818.pdf?index=trueIn PDF document text
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_5c79b506d5f4453491798cd12da099d0.pdf?index=trueIn 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_off0000dcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD5 5276 bytes
SHA-256: fc83239d499a88564f96039d372e21418b4f219c590c37ec667d6ef41e8b67f7
font_01_sfnt_off0000eed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED1 9796 bytes
SHA-256: d8c58104c4e3495b7e98897893a47bd4eb0a36879ea11a73b626768ae03f0f78