Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d5a91f0996520f…

MALICIOUS

PDF

71.4 KB Created: 2021-03-05 02:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0efbbc566920ddd58f4b87379e61136e SHA-1: 88a7d012d5a1c1e3d496457ebf6e7e412cdc3672 SHA-256: 77d5a91f0996520f12a3110355258a16d5f17c7fc174ebe48393cf48286e6255
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://kuzutuzo.ru/award?keyword=teaching+english+grammar+scrivener+pdf+download PDF link annotation
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/cb8f9d5.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/sparknotes_richard_iii_act_1_scene_4.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/dive_into_python_3_mark_pilgrim.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/IWbohdT/swamp_attack_gta_online.pdfIn PDF document text
    • http://wobafobigo.mywebcommunity.org/iso_9001_verso_2015_download.pdfIn PDF document text
    • http://tokudujadi.medianewsonline.com/sufavuvodeze.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/temojidelavaki.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/what_n-type_semiconductor.pdfIn PDF document text
    • http://dapajurop.mygamesonline.org/ripemaxiw.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/jayhcgd/helix_jump_2_kizi.pdfIn PDF document text
    • https://murovufusefafa.weebly.com/uploads/1/3/5/3/135331463/lisixitogaxak.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/why_is_my_dishwasher_not_fully_draining.pdfIn PDF document text
    • https://vebilikowuti.weebly.com/uploads/1/3/2/7/132740371/makud.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/zanowuruwazarukopejezoxi.pdfIn PDF document text
    • http://nunopasatipimav.medianewsonline.com/dilokexosabo.pdfIn PDF document text
    • http://gutagige.sportsontheweb.net/72206629765.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/iigpjcx/freeciv_port_5555.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/toyota_camry_se_2018_tires.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/Tjcjimg/drift_sport_font.pdfIn PDF document text
    • https://wekexodaxax.weebly.com/uploads/1/3/4/7/134713384/7418ade04.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/f9862.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://samesesodore.onlinewebshop.net/rewetewovisuxakewibunu.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/lunivuvi.pdfIn PDF document text
    • http://bidejepeko.onlinewebshop.net/what_are_five_characteristics_of_a_healthy_relationship.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_off0000d99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99F 5668 bytes
SHA-256: 036077e7c3fe5a90092203b09dc3b16f92e489e3707119284c30c9635a7f1d0b
font_01_sfnt_off0000eccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCD 10308 bytes
SHA-256: 7483777058300771f266b97f02612aa3169c20cadef538c66e5092370ddbc361

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