Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed07b45c63c91c7…

MALICIOUS

PDF

72.7 KB Created: 2021-06-17 22:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d70bf82a97b5249a246d91a75dd224aa SHA-1: e7d98017863e334c646c90baf1140a29038d3933 SHA-256: 9ed07b45c63c91c74da5f9502241fbdc77e6f73216495f750aa7852709357bd9
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, indicating a phishing attempt. It impersonates Apple and directs users to a URL that does not match the brand, likely to harvest credentials. The document contains numerous links to various domains, many of which are hosted on compromised WordPress sites, suggesting a link farm for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=inshot+app+for+windows+7.
  • 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://ketchas.ru/uplcv?utm_term=inshot+app+for+windows+7 PDF link annotation
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/icm6quc1uvqi2rioeiu4qohkvt/34993124098.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/d5a085c09f94b9aa444d6970055f24a4/joruzumemateri.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083cdfd6f464---mubadurirotilebur.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/natoru.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc71c5bca1e---24269179936.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c30bf993b3---fekumolovisodige.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609841fb96960---14858386233.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/nukewajajefedevikogatev.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-5/file/36916371317.pdfIn PDF document text
    • http://sns.hu/_user/file/nopixamewixawudunosi.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4f957fc36---venunaxaruwekodev.pdfIn PDF document text
    • https://xn--z4qq44i.tw/upload/actfiles/98118562217.pdfIn PDF document text
    • http://gyobel.itpublic/file/fizemuvi.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/76ae24079dee23377cdb9760052c3368/bideruvunepeve.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_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 5204 bytes
SHA-256: 661426a370e9ae77d2bb6595ac6ad5ba4c8745dd4b9b52d923c85e905c458c4b
font_01_sfnt_off0000f0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C1 10560 bytes
SHA-256: 92462002c47e0a5e5ccbaba8a2f804c7bfbafaa027474be17054c5256325f874

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