Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebd4ce65d4248c2…

MALICIOUS

PDF

86.7 KB Created: 2021-06-28 09:14:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 5c84c752bd7d061368ed7ac4705e8c8d SHA-1: a2b8030f027feaf82a02ed62a1801e6585842579 SHA-256: 2ebd4ce65d4248c2b9499b06b0be64440f15cf8d511d9ad342325cb1e0f8f188
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of brand-impersonation credential phishing. It contains multiple links, including one to 'smidgel.ru', which is presented as a lure for 'free codes for free Robux' in an attempt to trick users into clicking. The document leverages compromised CMS upload storage for some of its links, indicating a tactic to host malicious content on seemingly legitimate but compromised websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://smidgel.ru/uplcv?utm_term=free+codes+for+free+robux.
  • 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://smidgel.ru/uplcv?utm_term=free+codes+for+free+robux PDF link annotation
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160afe5ae1a642---14297391619.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728039b5121---tuwukezewumo.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/naxigetiwakowetesusipedan.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2495c2bef---72965671913.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/5fe14c0bfa259c32702d20088bc09cd5/nudenerenexumupo.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/1598363687367a705792942356ad567e/gasib.pdfIn PDF document text
    • http://bannermaul.com/userData/board/file/bilabatigudevovu.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/ejc2ktln10n4qbhdqmr319tkp2/gezeviridumokofagap.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/a87b35daa39a88189de1f05b9fdaa133/15580573518.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608e89d30d8cf---mutevixuwetuvegigiba.pdfIn PDF document text
    • https://uleiuri.ro/userfiles/file/25523142454.pdfIn PDF document text
    • http://gianniarnaudo.com/userfiles/files/wisaxebipexutokak.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/netoladekeze.pdfIn PDF document text
    • http://atya.eu/files/file/85372941526.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/n6lt0f50rql90788itv7ah5ee0/xigewakodumezijaf.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af6f1197f98---3748186424.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a6cf2ff3f264bcd3a31875247200d133/zifujo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b2c41d0d9---mebadujakogalogakibore.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/60422525782.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/69fd4d0d6a20a4ce71bd96030969e394/26206923637.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/8326a2ae5312649f999d002453a7afa2/zurunefot.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021061907170522.pdfIn PDF document text
    • http://koreaseowon.com/ckupload/files/12464897054.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/038adf6ee713d9255e54713dbedcabf4/93660022991.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_off0000ef31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF31 10284 bytes
SHA-256: 8debefa39d95cd6025c19b7e80cd81aa604b90deb55c687c0ffac16e15afb342
font_01_sfnt_off0001066f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E81 17812 bytes
SHA-256: fbba156e5614ccefe363eff22b3b8c31052eb09110ec0ba767395e64d525ff0e

Open this report in the interactive analyzer, or submit your own file for analysis.