Malicious PDF — malware analysis report

Static analysis result for SHA-256 df2e6fec366107d2…

MALICIOUS

PDF

67.5 KB Created: 2021-03-04 17:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 454f625cb4cff3430548ebe3c37703fa SHA-1: 5452a6f9eab9da2024dba9868f05dfd36391fc47 SHA-256: df2e6fec366107d2240ca6358aa4c28027f482405b6b79615763e1376b302b4f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=minecraft+tower+defence+final PDF link annotation
    • https://cdn.sqhk.co/tifapoxur/MiEPIih/homeschool_schedule_template_5th_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/hKBhfjx/neo_geo_battle_coliseum_rom_atomiswave.pdfIn PDF document text
    • https://cdn.sqhk.co/bikakigiben/lVggbig/cooking_fever_pc_game_download.pdfIn PDF document text
    • http://wagugekewa.22web.org/47609122281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378834/normal_603d4ef634a90.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/tabibogefidovevun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_601bff1126629.pdfIn PDF document text
    • http://laribij.scienceontheweb.net/best_marine_biology_books_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477167/normal_603063301b12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473044/normal_5fe6535315059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475577/normal_6019919e439c4.pdfIn PDF document text
    • http://ponoxavar.iblogger.org/widudaxibotesaxigure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474985/normal_602bed8f9cb66.pdfIn PDF document text
    • http://tiluvopira.medianewsonline.com/51333888641.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://goregined.rf.gd/51782649558.pdfIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_69381f6e353c4faebf7b544b0be1d311.pdf?index=trueIn PDF document text
    • https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_e85004e24157440e9e54125ed9300dfa.pdf?index=trueIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_6d9fe08896dc4c768438ccc6e6b124e2.pdf?index=trueIn PDF document text
    • http://bosevugenuroto.epizy.com/tracfone_zte_mobile_hotspot.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_off0000cd3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3F 4932 bytes
SHA-256: 69cbd4546790d77753f47d95c79cd3387366c051c4277e3ebfa5e1811741abba
font_01_sfnt_off0000de37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE37 10184 bytes
SHA-256: ff6ec5b8317a4dc201659ac3be5a02939525abcd5750c129d34c3aa64ee67cd7

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