Malicious PDF — malware analysis report

Static analysis result for SHA-256 6455755120ce66c4…

MALICIOUS

PDF

70.7 KB Created: 2021-02-25 15:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ebb1462a163fa25cb7b282b669c83dc6 SHA-1: ad7ec98829e6ef033ee584c18d3ed39df1974080 SHA-256: 6455755120ce66c4d498ba772195edf5d608b752305852a79e7fb5ec84f7eaf7
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://maypoin.ru/award?keyword=2008+ap+calculus+ab+multiple+choice+answers PDF link annotation
    • https://vamalemujuweput.weebly.com/uploads/1/3/4/6/134684866/1327329.pdfIn PDF document text
    • http://mp4.design/7345533344484kl8.pdfIn PDF document text
    • http://energierecrute-emplois.com/37024501072uyyya.pdfIn PDF document text
    • https://teditiwos.weebly.com/uploads/1/3/2/6/132681477/5443942.pdfIn PDF document text
    • https://cdn.sqhk.co/dudazume/gdCNigF/puguwo.pdfIn PDF document text
    • https://wibipujesotut.weebly.com/uploads/1/3/1/3/131398272/ed0972d3ad38d1f.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/triangle_coloring_worksheet09a7e.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/27oihii/sumatekugujoguderin.pdfIn PDF document text
    • http://d-youtube.com/15021475661woia2.pdfIn PDF document text
    • https://wudizabilizone.weebly.com/uploads/1/3/4/7/134745746/9871aea509a33.pdfIn PDF document text
    • http://paypallsecurity.com/school_love_album_video_song_tamil4opxf.pdfIn PDF document text
    • https://pedulexonevexo.weebly.com/uploads/1/3/0/7/130740508/nezukenuluwujolejox.pdfIn PDF document text
    • https://pazijovipa.weebly.com/uploads/1/3/4/3/134327002/148142.pdfIn PDF document text
    • https://puxetesotomu.weebly.com/uploads/1/3/0/7/130739839/kepovepafasomi_sonoturep_debajon_femevafizapu.pdfIn PDF document text
    • http://avbox.org/can_you_remove_the_plates_on_a_george_foreman_grilly4jg7.pdfIn PDF document text
    • http://kihepc.xyz/autosketch_for_mac_freemricg.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/how_much_oil_does_a_craftsman_power_washer_take.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 5780 bytes
SHA-256: 9911faa056954de2fbca1ff095438cd243cb1fcb8d0e0f962234d840374c35ad
font_01_sfnt_off0000ea10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA10 10248 bytes
SHA-256: aa925e9f336282a2d4b6591d5dcc362a2c2d8e5c3dfb0529fbcee8809eaabb53