Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d3b73589ebb6ba…

MALICIOUS

PDF

76.2 KB Created: 2021-06-10 11:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1e977a27d7592e7bd07a3e3b99da345d SHA-1: 1f7348072fdb781fd23b3038348bd474d3d70c15 SHA-256: e9d3b73589ebb6ba89ef20c1cc9f871c3fdf5719e4b413617b62821aa323a898
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links and a document body that mimics a movie streaming lure, aiming to trick users into visiting malicious websites. The presence of multiple links pointing to compromised WordPress uploads and disposable hosting, coupled with a high ML classifier score and ClamAV detection, strongly indicates a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs suggest it functions as a lure for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ketchas.ru/uplcv?utm_term=shubh+mangal+zyada+saavdhan+full+movie+watch+online PDF link annotation
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/a1e21ad5de89dfa049b9dceb4184d12c/piwisemo.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/9d3881a66d30b973d4b6a1d174769a17/pufufusafafelim.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/hnr16ihn075atop9upb8rug873/77773602643.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/bad8kuehmk3i0rm4mdtra72fe8/80691509855.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/gesevupebubugugab.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/654d6a98026288c63a28241f9364dd9b/5604054887.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/51922654586.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/9681b5e3791c107e8f021bc257546e1c/vusolodifowofajelipub.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce3bdc8590---56044811627.pdfIn PDF document text
    • http://clairerolo.com/userfiles/file/wupatapevizow.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/volosulonubinakawapabamin.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7dae903c0---67844490925.pdfIn PDF document text
    • http://perseverance.cyou/updatefiles/file/vixuvepinimegaruka.pdfIn PDF document text
    • http://granite1962.com/clients/869125/File/54976424170.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/e3b16861f13c6c6994a5889fddfc64a5/vukekis.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_off0000eb9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9F 5888 bytes
SHA-256: 719546ca76d62e373a99f51d4c02eb775afadb383a9d90d5a3ec855d21d56c7f
font_01_sfnt_off0000ffaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAA 10584 bytes
SHA-256: e59b62e8a00dc9de9ec905ce52eb2cf309f6e330fb244c5e20f6c99002fa5272