Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa9407eb41429c7…

MALICIOUS

PDF

85.6 KB Created: 2021-06-17 21:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a8f534c468917bf24b080faf616f0a76 SHA-1: 08557e27a24ca29c8ffca057e0e34416ab0af79c SHA-256: 0fa9407eb41429c7b678ff377fcff4dbc6acc495576b68cbfa60890611a20446
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload storage, suggesting a link farm designed to distribute malware. The document body, though heavily obfuscated, contains references to 'Warzone aimbot pc download free', aligning with a phishing lure for malicious software.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a21f3e4ecd---kemumojagoxudonigozotojif.pdf In PDF document text
    • http://angelescare.com/userfiles/file/towakenosi.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/16201221357.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/7cin2pehi915t2smu4o7ovvvj1/sibexo.pdfIn PDF document text
    • http://robalton.es/Albums/images/file/%5C/85783922965.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/3626283792.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/4bfc3c7347eca87fdefb9a7d320be895/54653439507.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/47386709153.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/321b98a17c17fec26baf0888b43dc5ec/47389080825.pdfIn PDF document text
    • http://short-story.ru/upload/file/kogoge.pdfIn PDF document text
    • http://homenet-spb.ru/userfiles/file/zonitexe.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160966c432cb83---lekifezuzuvuzetejap.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/54121463989bf1898bf7e619a33bcece/kovawixalenelunodikizef.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/1d525f5c5aa4f68e2e34dbb3535742b3/nojusatagisawaleg.pdfIn PDF document text
    • http://ddgasul.com/userfiles/file/18022630864.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6e96d71f1---vepitawozapejigiruferud.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/cbd19a270ca17d6cc56a55e63ae86dea/wumedesoxolitamugusizan.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd0f6446c4---nunolumajugogoxedoni.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/64984955027.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=warzone+aimbot+pc+download+freePDF link annotation
    • 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_off00011076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11076 5416 bytes
SHA-256: 2b3b1898bc6937fe26690ea436c3a3fc1d5286e8d0cc33e0517cfa1103dab95b
font_01_sfnt_off000122e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E4 11280 bytes
SHA-256: 28fcc8bb9ecad77e0f70ff1ba909acbb592f76083748993ba41148558c596b47

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