Malicious PDF — malware analysis report

Static analysis result for SHA-256 c476294b54c2bd74…

MALICIOUS

PDF

79.3 KB Created: 2021-09-22 10:35:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 14612fa9e7e114178c94c593aa963068 SHA-1: be4181e4612c88853e3f0a827ce2e3de4aa376d5 SHA-256: c476294b54c2bd74606a70fce994cf08b787bd5797c106544fc07debc59f8a57
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pixomot.ru/uplcv?utm_term=3+idiots+full+movie+download+hd+720p PDF link annotation
    • http://mtjjt.com/2013/upload/article/files/21090315293580470667moo.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/mexebowewo.pdfIn PDF document text
    • http://ozdesignhouse.com/app/webroot/uploads/files/gapujumojasamuw.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/24626753762.pdfIn PDF document text
    • http://southerncross-ex.com/images/blog/file/41067217107.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/jusofatejajagolulemug.pdfIn PDF document text
    • http://on-video.com/movies/movie_data/file/jujuzenazukebujur.pdfIn PDF document text
    • http://kyanite.tv/userfiles/file/23818319567.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/306b7111e2675c5e5caf62ff2e103cf3/sogovososori.pdfIn PDF document text
    • http://droneducational.com/admin/userfiles/file/nenusij.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/b58042c22cd911723116b5455e99cbb5/50288900880.pdfIn PDF document text
    • https://designsdubaiukfashion.com/userfiles/file/20351892769.pdfIn PDF document text
    • http://svx.su/ffile/file/gazovogalelupu.pdfIn PDF document text
    • http://tdsns.ru/userfiles/file/70930707549.pdfIn PDF document text
    • https://samsungdvm.net/upload/ckfinder/files/71800529003.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161378d14f2afc---loloxajukesudopemelove.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/edab4b731108c69d14fcf5e562a4cb20/6397175497.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed49855cfd---1879495687.pdfIn PDF document text
    • https://dpengineers.info/admin/userfiles/file/92719751981.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210918091323.pdfIn PDF document text
    • https://akconta.com/uploads/files/72401475684.pdfIn PDF document text
    • https://muzpony.de/obrazki/file/28722677116.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/kidofut.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 11284 bytes
SHA-256: e7937ae0db55dd927fa6e1d4ce50bb5262904ab88c91bb71c82ead2d4bdbd7bf
font_01_sfnt_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 17492 bytes
SHA-256: dc30d5197654f3943e083fcbbaa789fcb933bdd069416d21d439977b2856e0cc
font_02_sfnt_off000117e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1