Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe9f843454ff218…

MALICIOUS

PDF

73.1 KB Created: 2021-06-13 23:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e7e8f85d211a4a4d4c00c179b23f1ba7 SHA-1: c6019b16daccecdabc6e47c52becab37bfcdb805 SHA-256: abe9f843454ff218fa022d11df2e23312a887773320370520bc67783840f5558
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, presented as a lure for a popular movie, that point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malware or conduct phishing. The document's structure and embedded URLs indicate it functions as a link farm designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crewmak.ru/uplcv?utm_term=deadpool+full+movie+online+free+123movies PDF link annotation
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/7c97a70e5d16d4827aa7ead9251cdf6b/winalepazekurirazal.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c226480993---869292256.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/4d77023cddcae9e3be9e4eb325a9a581/jifurulanevejaw.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/11248768673.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/2332737792.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087141869eba---70422070040.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/d5f29c7a3dd48b4ca5c073c530b652e2/zijaj.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/um50fgc352eloch8g2ifp1emd2/27293055094.pdfIn PDF document text
    • https://baobihungphu.com/media/ftp/file/fafemodelixopamutupa.pdfIn PDF document text
    • http://ekolojikweb.net/upld/userfiles/file/fugebikemopujo.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/lfkr2vhna3066ecov61sm1jb75/biderekuregozidog.pdfIn PDF document text
    • https://mallncart.com/userfiles/files/5210250014.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/0486bc0901f929c84a1fff5167cb39f2/gosasate.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083041fab38c---85726855694.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_off0000dfda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDA 5596 bytes
SHA-256: 85a88da29370ec14c1dd5382fa17e9cf3a7de922c3c8ff30c5a1e0c32d0e3dec
font_01_sfnt_off0000f2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E0 10848 bytes
SHA-256: 6080f4223d5649c0cc1802d1f19eb6777f4e4f39f895448af607ae9aae679810

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