Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6afa0ccd6d9f35d…

MALICIOUS

PDF

81.6 KB Created: 2021-06-10 19:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e39d1bd969461942f85a6c606fa68590 SHA-1: d08a0003c613d8337bed8799bbe6ceb47840377b SHA-256: b6afa0ccd6d9f35d3bae24e7076c6be54f50af58da1405a1302eea0e08875361
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised WordPress upload storage, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware distribution. The document body, though heavily obfuscated, contains a reference to 'Lego star wars cheats xbox 360', likely a lure to attract victims.

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://garglob.ru/uplcv?utm_term=lego+star+wars+cheats+xbox+360 PDF link annotation
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099ab5dd95db---lewavawaripigudijoxixi.pdfIn PDF document text
    • http://hodori247.com/uploads/files/30789440856.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a02ec837713---kulipewuzogos.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a32f6bdcc92---29389188392.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/fiposibot.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/211cfcc958d30ebb217c6a3d7033b881/watinubaze.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/bexufubapeferevokukali.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5af9704c4---1162362527.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/57ulo1o4r0pekdti2v0advqps5/20358011880.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/donumapepogopivulepigejo.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/81937cddcd1f6b7988942306bb1060f1/65998446513.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/c791d6e0d2e867097433156d33f7894e/83165680437.pdfIn PDF document text
    • http://www.knickmeier.net/images/pageimg/file/xikisotelajewusukogo.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202105/file/1622283551.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/5ea3f1362023233295a2bdb3b79d683d/62119826042.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_off0000f0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 5732 bytes
SHA-256: 8f2e98eb334f5ff8aa6fb0b3f1a9ee78a30719c3e262cd605094c86d9d7ee05e
font_01_sfnt_off0001044d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044D 16984 bytes
SHA-256: 3cb18bebf63f4dc3fb25583dd083da0ee2f3494118f12435cba3cc71dfc8fd7d

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